· must is a modal verb, and all modal verbs are followed by a bare infinitive: He must have, he could have, … · hi, i searched this forum before posting, and there are quite some threads as to the use of must, should … · be to + infinitive = going to = must ( as the text says, be to + infitive adds demand,destiny or expectation, also … Im wondering if this sentence sounds natural or if you would say it differently: Must提问怎么回答 肯定、否定回答分别是什么？以must提问的一般疑问句,意为“……必须……吗”. 肯定回答用must（必须）,否定. You must be really bored, …
Must See: Norrie'S Emotional Victory After Beating Musetti!
· must is a modal verb, and all modal verbs are followed by a bare infinitive: He must have, he could have, … · hi,...
