五. shall和should的用法。
1. shall用于第一人称疑问句。表示征求对方意见。
What shall we do this evening?
Shall I open the window?
2. shall 用语第三人称疑问句中,表示说话人征求对方的意见或向对方请示。
When shall he be able to leave the hospital?
3. shall用于第二、三人称的陈述句,表示说话人给对方的命令、警告、允诺或威胁。
You shall fail if you dont work harder.
He shall have the book when I finish reading.
He shall be punished.
4. should表示劝告、建议、命令,其同义词是ought to,在疑问句中,通常用should代替ought to.
You should go to class right away.
Should I open the window?
5. should + have +done应该做的事实上没做;shouldnt have done不该做的事却已经做了,常含有责备的意思。
You should have started earlier this morning.
You shouldnt have treated her like that.
六. will和would的用法。
1. 用于疑问句表示请求、建议等,would比will的语气更加委婉。
Will you please give me a hand?
Would you mind my smoking here?
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