其他情態(tài)動(dòng)詞舉例：
can (could), may (might), must, need, ought to, dare (dared), shall (should), will (would) must
四大分類(lèi)
①只做情態(tài)動(dòng)詞:may, might, must..
②可做情態(tài)動(dòng)詞又可做實(shí)義動(dòng)詞：如：need, dare,can
③具有情態(tài)動(dòng)詞特征：have(had,has) to,used to, ought to
④可做情態(tài)動(dòng)詞又可作助動(dòng)詞：如：shall(should),will(would)
注意：mustn't代表強(qiáng)烈禁止 must表示主觀，have to表示客觀。美式英語(yǔ)中常用must not 而不用 mustn't. mayn't,mightn't和shan't也很少用