9、shall的基本用法
(1)shall用作情态动词时,用于第二、三人称,表示说活人的意愿,可表示"命令"、"警告"、"强制"、"威胁"或"允诺"等意,如:He shall go first, whether he wants to or not. (2)在疑问句中,shall用于第一、三人称,表示说话人的征询对方意见或请求指示,如:Shall I open the door?
10、should的基本用法
(1)should作为情态动词可以表示"建议"或"劝告",有"应该"之意,如:You should learn from each other. (2)should后接完成式表示过去没有做到本来应该做的事情,或是做了本来不应该做的事情。如:You should have give him more help.
11、will的基本用法
(1)用于各人称,可以表示"意志"或"决心",如:I have told him again and again to stop smoking, but he will not listen. (2)在疑问句中用于第二人称,表示说话人向对方提出请求或询问对方的意愿,如:Will you please tell me how to get to the Capital Gymnasium? (3)will可以表示一种习惯性的动作,有"总是"或"会要"之意,如:Every morning he will have a walk along this river.
12、would的基本用法
(1)would作为will的过去式,可用于各人称,表示过去时间的"意志"或"决心",如:He promised he would never smoke again. (2)在疑问句中,用于第二人称,表示说话人向对方提出请求或许问对方的意愿时,比用will的气更加婉转,如:Would you like some more coffee? (3)在日常生活中,学用"I would like to…"表示"我想要"或"我愿意"之意,以使语气婉转,如:I would like to do Ex.2 first. (4)would可以表示过去的习惯动作,比used to正式,并没有"现已无此习惯"的含义。如:Last year our English teacher would sometimes tell us stories in English after class. / During the vacation he would visit me every week. (5)表料想或猜想,如:It would be about ten when he left home./ What would she be doing there?/ I thought he would have told you about it.
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