Identify the function of must in the following sentence: "Jonathan, you must have driven through the night to have arrived so early!". a) To introduce or emphasize an opinion or sentiment. b) To indicate a strong intention. c) To express necessity. d) To express a certainty or high probability. An easy esl grammar lesson about using the modal verb must. This lesson explains how to use must and must not to make recommendations, prohibit people from doing things, and impose obligations to behave in a certain way. Includes example sentences and practice tests. You are not allowed to use your mobile phones. (NOT It isn't allowed to use …) It is (not) permitted to. We can use it + be (not) permitted to +infinitive to express permission or prohibition in formal or official situations, to say what the rules or laws are. It is not permitted to take photos of the archive documents. Picnics are not Download full-size image from Pinterest. Must/mustn't Use must + infinitive without to. Must is a modal verb, and modal verbs are followed by an infinitive without to.. I must go to the doctor. (NOT I must to go to the doctor.; No -s. Modal verbs don't add -s after he/she/it.. He must come with us. (NOT He must comes with us.; Use must/mustn't in negatives and questions You must not say anything stupid if you want keep your job. You must remember to feed the dog. Trên đây là toàn bộ bí kíp để bạn có thể làm chủ cấu trúc must nhanh chóng nhất. Để học giỏi ngữ pháp tiếng Anh, hãy tham khảo thêm các bài viết khác của Step Up bạn nhé. Chúc bạn luôn tìm MUST is a modal verb. With modals verbs, there is only one form of it for every subject pronoun: You see there is no change in the word MUST. Just like the other modal verbs, there is never an S at the end of must: He musts stop. (This is NOT CORRECT) He must stop. (This is CORRECT) After Must we have the verb, or more specifically, the base 8jjD.

use of must and must not