情態(tài)動(dòng)詞的使用

　　1）情態(tài)動(dòng)詞can（能夠），must（必須），may（可以）

　　結(jié)構(gòu)：主語+can/must/may+動(dòng)詞原型

　　He can make the tea.

　　Sally can air the room.

　　We can speak English.

　　★變疑問句將情態(tài)動(dòng)詞移到句首

　　Can he make the tea?

　　Can Sally air the room?

　　Can we speak English?

　　★變否定句在情態(tài)動(dòng)詞后面加not

　　He cannot make the tea.

　　Sally cannot air the room.

　　We cannot speak English.