中考英语专题复习_动词描述.ppt

1. must 主观上的看法，说话人的命令，要求别人做某事 He said that they must work hard. have to 表客观要求 My mother was ill, so I had to call the doctor at night. must\ have to 2. must只有一种形式 have to 有人称、时态、数的变化 3. 否定结构中 don’t have to 不必 mustn’t 禁止 表肯定的猜测，只用在肯定句中 He must be asleep. He can’t be awake now. 4.need 　(1) 表示“需要，必须”，主要用于否定句和疑问句中。 We need’n t hand in our homework now. Need I call him for you? 　（2）need引导的疑问句，肯定回答时多用must，否定回答时用needn’t。 　　　Need he come?? 他必须来吗？ 　　　Yes, he must.是的，必须来。 　　　No, he needn’t.不，他不必来。 5. Shall \ should shall 常用于第一人称，征求对方的意见或指示 Shall I open the door? What shall we eat? Should 为shall过去式，语气更委婉，也可以表示“应该” Will/ would 1、表示意愿 I’ll try my best to overcome the difficulty. 2、表示意图 What will you do? 3、表示请示 Will you help me to put these books in order? 6 7.had better 加动词原形 ，表建议，劝告 “最好” had better not do 没有人称和数的变化 说明 1、must + have +p.p 对过去事情的肯定猜测。 The road is wet. It must have rained last night. Should have done 区别 shouldn’t have done 2、情态动词的过去式与原形相比，多点礼貌，少点冒昧， 语气更为委婉。 动词不定式、动名词、现在分词、过去分词 -----+doing 1.have fun +doing 2.stop+doing停止做该事 3.be good at +doing =do well in+doing 4.forget/remember+doing已做,但已忘记 5.enjoy+doing 6.like +doing 7.Thanks for+doing 8.have problems/trouble/difficulties +doing 9.What /How about+doing? 10.go+fishing/shopping/boating/swimming 11.finish+doing