Question 1

What does "need to" mean?

Accepted Answer

To be required or obliged to do something out of practical necessity.

Question 2

How do you use "need to" in a sentence?

Accepted Answer

You need to submit the form before Friday or your application will be rejected.

Question 3

Is "need to" formal or informal?

Accepted Answer

"need to" is register-neutral — appropriate in both casual and formal contexts. One of the most common semi-modal constructions in English. Unlike the modal 'need', 'need to' always takes an infinitive and follows normal auxiliary rules (e.g. 'do you need to go?'). Used in both formal and informal contexts.

need to

"to" を含むフレーズ