How to use "be used to"

What Does "be used to" Mean?

The expression be used to is a versatile collocation in English that carries two distinct meanings depending on its grammatical construction.

1. Familiarity (Adjectival): In this sense, it means to be accustomed to or familiar with something so that it no longer seems strange or difficult. This meaning is semi-idiomatic.
2. Purpose (Passive): In this sense, it is the passive form of the verb "use" followed by a purpose clause. This meaning is compositional, where each word retains its literal meaning.

Register: Both forms are neutral and are appropriate for academic, professional, and casual contexts.

How to Use It

1. Familiarity: be used to + [noun/gerund]

When expressing habituation, the word "to" is a preposition, not part of an infinitive. It must be followed by a noun, pronoun, or a gerund (-ing form).

• Typical objects: "the noise," "the cold," "driving on the left."
• Separability: The components cannot be separated; "be" is conjugated (am, is, was), followed by "used to."

2. Purpose: be used to + [infinitive]

When expressing the function of an object, "to" is part of the infinitive verb.

• Typical objects: Tools, software, or chemicals.
• Separability: The verb "be" and the participle "used" can be separated by adverbs (e.g., "can also be used to").

What sounds unnatural: Using a base verb after the "familiarity" sense (e.g., I am used to wake up early is incorrect; it must be waking up).

Real-World Examples

These examples are sourced from be used to on Ludwig.guru.

"New Yorkers should be used to change." — nytimes.com

"Aspirin can be used to relieve pain." — britannica.com

"I should be used to it." — theguardian.com

"Assessments should be used to improve instruction." — washingtonpost.com

"Can fMRI be used to detect emotions?" — princeton.edu

Similar Phrases and Alternatives

Phrase	Context
be accustomed to	More formal than "be used to"; follows the same pattern with a gerund or noun.
be utilized to	Formal alternative for the passive "purpose" sense, often used in technical contexts.
get used to	Emphasizes the process of becoming familiar rather than the state of being familiar.
serve to	A concise alternative for the "purpose" sense (e.g., "This serves to illustrate...").
be familiar with	Focuses on knowledge or experience rather than habituation.

Common Mistakes

• Confusing with 'used to' (past habit): Learners frequently confuse this with the semi-modal used to for past habits, incorrectly following it with an infinitive instead of a gerund or noun when they mean familiarity. For example, "I am used to live here" is wrong; it should be "I am used to living here."
• Wrong Verb Choice: Using "make used to" or "have used to" instead of the correct auxiliary be.
• Spelling Errors: Writing "be use to" (dropping the 'd') in the present tense. Even in the present, it must be used.

Quick-Reference Summary

Expression	Meaning	Grammatical Pattern	Register
be used to	To be accustomed to OR to be utilized for	be + used to + [noun/-ing] OR [infinitive]	Neutral

FAQs

Can the words in the phrase be used to be separated by other words?

When be used to indicates purpose in the passive voice, you can place adverbs like "never" or "effectively" between the words. However, when it indicates familiarity, the phrase used to stays together as a unit following the verb be.

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What is the difference between be used to and get used to?

The phrase be used to describes a state of being already familiar with something. In contrast, get used to describes the dynamic process of becoming familiar or adjusting to a new situation over time.

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Why is it incorrect to say I am used to wake up early?

Learners frequently confuse this with the semi-modal used to for past habits, incorrectly following it with an infinitive instead of a gerund or noun. Because to functions as a preposition in the context of familiarity, it must be followed by the gerund waking up.