过去完成时表示过去的过去发生的动作。 At first I thought I d done the right thing, but I soon realized that I d made a mistake. (开始我以为我做对了,但是很快就发现自己犯了个错误。) The house was dirty. They hadn t cleaned it for weeks. (房子很脏,他们好几个星期没打扫了。)
8. 过去完成进行时
过去完成进行时表示过去某事发生之前的一段时间内一直发生的动作。 I was very tired when I arrived home. I d been working hard all day, (我到家时非常累。我一整天都在玩命地干!) Ken gave up smoking two years ago. He d been smoking for thirty years (两年前肯戒了烟,之前他抽了三十年烟。)
9. 将来时
一般将来时表示未来将要发生的动作。 Look at those black clouds. It s going to rain. (看那成堆的乌云,要下雨啦!) I think the weather will be nice later. (我想天气一会儿会好。) 过去将来时一般用于主句为过去时的宾语从句中。 He told me that he would give up his job. (他告诉我他要辞职。)
10. 情态动词
情态动词不能单独作谓语,只能与实意动词一起构成谓语。有: shall, should, will, would, can, could, may, might, must, dare, need, ought to, be able to, used to, 等。 We can see the lake from our bedroom window. (从卧室的窗口可以看见那湖。) I was so tired. I could have slept for a week. (我累死了!我能蒙头睡上一星期。) Will you shut the door, please? (请你把门关上,好吗?) Whenever Arthur was angry, he would walk out of the room. (阿瑟生气时,就会出去。) Liz, can you do me a favor? (李兹,帮个忙吧?) Could I use your mobile phone? (能借用一下您的手机吗?) Where shall we go this evening? (今晚咱们去哪?) Should we invite Susan to the party? (要请苏三参加舞会吗?) You must keep it a secret. You mustn t tell anybody else. (你必须保密,谁都不能讲。) I am not sure whether I can lend you any money. I may not have enough. (我也不清楚能否借钱给你。我自己可能都不够。) You might have left it in the shop. (可能你把它落在店里了。) We ve got plenty of time. We needn t hurry. (我们有大把时间,不急。) They dare not tell the truth. (他们不敢说实话。) I really ought to go and have my eyes tested. (我确实该去检查一下我的眼睛了。) You used to smoke 40 cigarettes a day. (他以前每天狂抽四十根烟。) Jack was an excellent tennis player. He was able to beat anybody. (竭克是个网球健将。他天下无敌。)