Modal Verbs

Lesson 8: Used To and Would for Past Habits

Lesson: 8 of 10 | Level: 🟠 Intermediate

1. Lesson Overview

Every language has ways of talking about the past that go beyond simply saying what happened. English has two particularly expressive tools for describing what was habitual, typical, or characteristic during a past period — used to and would. Both can describe repeated past actions and routines that no longer occur, but they are not fully interchangeable. Used to has a broader range — it can describe both past habits and past states — while would is restricted to past actions and cannot describe states.

Beyond their use for past habits, this lesson also addresses a third construction — be used to and get used to — which are frequently confused with used to by learners at every level despite being entirely different in meaning and grammatical behaviour. The confusion between used to (past habit) and be/get used to (familiarity with something) is one of the most common and most persistent errors in intermediate and advanced English.

Objectives

By the end of this lesson, you will be able to:

• Use used to correctly for past habits and past states
• Use would correctly for past habits and repeated past actions
• Understand the distinction between used to and would for past habits
• Distinguish used to from be used to and get used to
• Recognise and correct common errors in the use of these expressions

2. Core Content

A. Forming Used To

Used to is a semi-modal expression used exclusively to refer to the past. Despite ending in -d, it is not a regular past tense form — it is a fixed expression that describes habitual or repeated past actions and states that no longer exist.

Affirmative, negative, and question forms

Note the spelling in questions and negatives — use to, not used to — because the -d ending of used is absorbed by the -d of did in standard British English. Both did not use to and used not to are acceptable — did not use to is more common in informal and spoken English; used not to sounds more formal and literary.

B. The Main Uses of Used To

1. Past habits and repeated actions that no longer occur

Used to describes actions that were habitual or repeated during a past period but are no longer happening. The implication is always that the situation has changed — used to draws a contrast between the past and the present.

For example:

Before the development of autonomous underwater vehicles, scientists used to conduct all deep-sea surveys using crewed submersibles, which was far more expensive and far more time-consuming. Polar explorers used to travel to remote research stations entirely on foot and by dog sledge — a journey that modern aircraft can complete in a fraction of the time.

In both sentences, used to implies that the practice is no longer current — the contrast with the present is built into the expression itself.

2. Past states that no longer exist

This is the most important distinguishing feature of used to — it can describe past states as well as past actions. Would cannot be used for past states.

For example:

The ocean used to be far less acidic than it is today — the current rate of acidification is unprecedented in at least the past 300 million years. Scientists used to believe that all life on Earth ultimately depended on photosynthesis and solar energy — the discovery of hydrothermal vent communities in 1977 changed this understanding permanently.

In the first sentence, used to be describes a past state — the lower acidity of the ocean — that no longer exists. In the second, used to believe describes a past state of belief. Neither would be nor would believe could replace used to in these sentences — would is restricted to actions.

3. Emphasising contrast between past and present

Used to is particularly effective for emphasising how things have changed — drawing explicit attention to the difference between the way things were and the way they are now.

For example:

Deep-sea biology used to be one of the most poorly funded areas of marine science — today it attracts significant international investment and public interest. The instruments used to require manual calibration before every dive — the latest generation of sensors self-calibrate automatically.

C. Forming Would for Past Habits

Would — when used for past habits — follows the standard modal auxiliary pattern: followed by the bare infinitive, same form for all persons, questions and negatives without do.

Affirmative, negative, and question forms

D. The Main Uses of Would for Past Habits

1. Repeated past actions and routines

Would describes actions that were regularly repeated during a past period — habitual routines, typical patterns of behaviour, and characteristic activities. It is used in narrative and descriptive writing to evoke the texture and rhythm of a past period.

For example:

During the early years of the research programme, the team would spend three months at sea each summer, systematically surveying a different sector of the ocean floor from the previous year. Darwin would spend the early morning hours reviewing his correspondence and his notes before turning to the specimens he had collected during the previous day’s work.

2. Evoking the atmosphere of a past period

Would is particularly effective in literary, biographical, and historical writing for evoking the characteristic patterns of life during a past period — creating a vivid, habitual texture that brings the past to life.

For example:

In the 1970s, deep-sea surveys would take months to complete what modern autonomous systems can achieve in days — each deployment would require a full crew, expensive equipment, and weeks of preparation. Victorian naturalists would collect specimens from every habitat they encountered on their travels, shipping them back to museums and universities across Europe in carefully preserved consignments.

3. Would not — past refusal and unwillingness

Would not (wouldn’t) for past habits expresses a habitual past refusal or unwillingness — something the subject characteristically refused to do during a past period.

For example:

The lead researcher wouldn’t accept preliminary findings without independent verification — every claim had to be supported by robust and reproducible evidence. Early critics of plate tectonic theory wouldn’t engage with the evidence Wegener presented — the prevailing orthodoxy was too deeply entrenched to be easily challenged.

E. Used To vs. Would — The Critical Distinction

The distinction between used to and would for past habits is one of the most important in this lesson. Both can describe repeated past actions — but only used to can describe past states.

Consider the following examples:

Scientists used to believe that life could not exist without sunlight. ✅ (past state — would believe is incorrect) Scientists would conduct surveys manually before autonomous vehicles became available. ✅ (repeated past action — used to conduct also correct) The ocean used to be far less acidic. ✅ (past state — would be is incorrect) Expedition teams would spend months preparing for each survey. ✅ (repeated past action — used to spend also correct)

The rule is clear: for past states — including states of being, belief, feeling, possession, and condition — used to is the only correct choice. For repeated past actions, both used to and would are acceptable, though they differ slightly in tone and emphasis.

F. Be Used To and Get Used To — A Critical Distinction

Be used to and get used to are entirely different from used to in both meaning and grammatical behaviour. They are not modal expressions — they are fixed phrases in which used is an adjective meaning accustomed.

Be used to — accustomed to something

Be used to expresses familiarity with something — being accustomed to a situation, activity, or condition. It is followed by a noun, a pronoun, or a gerund (-ing form) — never by a bare infinitive.

For example:

Scientists who work in the deep ocean are used to operating in conditions of extreme pressure, darkness, and cold. The research team is used to working with incomplete data — it is a routine feature of deep-sea biology.

Get used to — becoming accustomed to something

Get used to expresses the process of becoming accustomed to something — a change from unfamiliarity to familiarity. It is also followed by a noun, a pronoun, or a gerund — never by a bare infinitive.

For example:

New members of the expedition team quickly get used to the physical demands of fieldwork in extreme environments. Scientists get used to the uncertainty inherent in working at the frontiers of knowledge — it is part of the discipline.

The three-way comparison

3. Usage in Context

• Used to + bare infinitive describes past habits and repeated actions that no longer occur — with an implicit contrast between past and present.

Before the development of autonomous underwater vehicles, scientists used to conduct all deep-sea surveys using crewed submersibles — a process that was enormously expensive and time-consuming compared with modern approaches. Early polar explorers used to navigate by the stars and by dead reckoning — modern expedition teams rely on GPS systems that provide real-time positioning data accurate to within a few metres.

• Used to + bare infinitive describes past states — beliefs, feelings, conditions, and circumstances that were true in the past but are no longer true now.

The ocean used to be far less acidic than it is today — the current rate of change in ocean chemistry is unprecedented in the geological record of at least the past 300 million years. Scientists used to believe that the deep ocean was essentially a desert — devoid of significant life below 1,000 metres. The discovery of hydrothermal vent communities in 1977 completely overturned this assumption.

• Would + bare infinitive describes repeated past actions and habitual routines — it is particularly effective in literary and narrative writing for evoking the characteristic texture of a past period.

During the early years of the programme, the team would spend three months at sea each summer, working systematically through a different sector of the ocean and building up a comprehensive picture of the vent field over time. Darwin would rise early each morning to review his correspondence before beginning the day’s work — a routine he maintained throughout the long years of writing that followed the Beagle voyage.

• Would creates vivid narrative texture in biographical and historical writing — evoking the habitual rhythms of a past life or era.

Victorian naturalists would collect specimens from every environment they encountered, preserve them carefully in spirit or on pins, and dispatch them to institutions across Europe in wooden crates packed with sawdust. In the early days of deep-sea exploration, an expedition would take months to achieve what a modern autonomous vehicle can accomplish in a matter of days — each survey required a full crew, a research vessel, weeks of preparation, and enormous financial resources.

• Used to is required — not would — when describing past states, including states of being, belief, feeling, and possession.

The ocean used to be far less warm at the surface than it is today. (past state — would be incorrect) Scientists used to know very little about the chemistry of hydrothermal vent fluids. (past state of knowledge — would know incorrect) The research station used to belong to a different institution before the merger in 2005. (past state of possession — would belong incorrect)

• Both used to and would are acceptable for repeated past actions — the choice depends on register and the intended effect.

Scientists used to conduct surveys manually before autonomous vehicles became available. (neutral — used to emphasises the contrast with the present) Scientists would conduct surveys manually before autonomous vehicles became available. (narrative — would evokes the habitual texture of the past practice)

• Be used to + noun or gerund expresses current familiarity — being accustomed to something now.

Scientists who work regularly in the deep ocean are used to the physical and psychological demands of operating in conditions of extreme isolation and sensory deprivation. The research team is used to working with gaps in the data — it is an inevitable feature of any study that relies on observations from remote and inaccessible environments.

• Get used to + noun or gerund expresses the process of becoming accustomed to something — a gradual adjustment from unfamiliarity to familiarity.

New members of the expedition team quickly get used to the demands of continuous monitoring work — the long hours, the physical discomfort, and the need for sustained concentration. Scientists get used to the uncertainty that is inherent in working at the frontiers of knowledge — it is one of the defining features of research at this level.

• Do not use would to describe past states — use used to instead.

The ocean used to be far less acidic. (past state — correct) The ocean would be far less acidic. (past state — incorrect; would be sounds hypothetical, not habitual past)

• Do not follow be used to or get used to with a bare infinitive — use a noun or gerund instead.

Scientists are used to working with incomplete data. (gerund — correct) Scientists are used to work with incomplete data. (bare infinitive — incorrect)

• In negative constructions, used not to is more formal and literary; did not use to is more common in everyday English.

Scientists did not use to have access to the kind of high-resolution acoustic imaging that is now standard in deep-sea surveys. (informal/neutral) Scientists used not to have access to such sophisticated technology. (formal/literary)

• In formal academic writing, used to is preferred over would for describing past states and conditions in a field — it is clearer and less ambiguous.

Before the 1977 discovery, scientists used to assume that all ecosystems ultimately depended on photosynthesis. (clear past state — academic writing preferred) Before the 1977 discovery, scientists would assume that all ecosystems depended on photosynthesis. (habitual past action — acceptable but slightly less clear)

• Do not use used to for a single past event — it must describe a repeated or habitual situation.

The team used to conduct surveys every summer. (repeated — correct) The team used to conduct the survey in 2019. (single event — incorrect; use simple past: conducted)

4. Common Errors and Corrections

5. Lesson Mastery

After completing this lesson, you should now be able to:

    ✅ Use used to correctly for past habits and past states

    ✅ Use would correctly for past habits and repeated past actions

    ✅ Understand the distinction between used to and would for past habits

    ✅ Distinguish used to from be used to and get used to

    ✅ Recognise and correct common errors in the use of these expressions