知識點二 must與have to
兩者都有“必須”之意,但用法有所區(qū)別:
(1) must多表示主觀需要或責(zé)任感的驅(qū)使有必要或有義務(wù)去做某事,多譯為“必須”,而have to 多表示客觀存在的環(huán)境所限,即客觀要求(無奈) 而為之,多譯為“不得不干某事”。•
(2) must沒有時態(tài)的變化,而have to有時態(tài)的變化。
(3) must的否定形式為mustn’t,意為“不允許”,表示禁止某人做某事。由must引起的疑問句,肯 定回答要用must或have to,否定回答要用needn’t或don't have to,意思是“不必”。
2. (單項選擇)
() (1) —Must I finish my homework before eight o’clock?
—Yes,you.
A. must B. don't have to
C. mustn’t D. need to
() (2) —Must I attend the meeting?
—No,you . You can ask Tom to go instead.
A. must B. don't have to
C. mustn’t D. had to
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