牛津实用英语语法:151 must,have to和 need用于疑问句

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  need?和must?都意味着说话的对方是有关的权威。need?还包含着说话人希望得到否定回答的含义:Must I go,moth- er?和Need I go,mother?含义相同,但在后一问句中,说话人希望他的母亲回答说“不”。need的另一种疑问式do I need?等也有同样的用法。注意以下各种可能的回答:

  —Shall I have to go?

  —Yes,you will./No,you won't.

  —我必须去吗?

  —是的,必须去。/不,不必去。

  —Have I got to go?

  —Yes,you have./No,you haven't.

  —我必须去吗?

  —是的,必须去。/不,不必去。

  —Does he have to go?

  —Yes,he does./No,he doesn't

  —他必须去吗?

  —是的,必须去。/不,不必去。

  —Need I go?

  —Yes,you must./No,you needn't.

  —我需要去吗?

  —是的,必须去。/不,不需要去。

  —Must I go?

  —Yes,you must./No,you needn't.

  —我必须去吗?

  —是的,必须去。/不,不需要去。