人教版英语八年级下册 Unit 6 Unit 6 专题讲解-动词不定式课件.ppt

1、动词不定式动词不定式to do donot to do宾语宾语未做未做 将做将做 去做去做回顾回顾动词不定式作宾语动词不定式作宾语动词不定式动词不定式作主语作主语作定语作定语作状语作状语做表语做表语作主语作主语To learn English is important.It is important to learn English.It is easy for me to swim.It is nice of you to help me.(1)(1)放在句首作主语，放在句首作主语，表示某个具体或将表示某个具体或将来的动作来的动作(2)(2)为了保持句子平为了保持句子平衡，避免头重脚轻，衡，

2、避免头重脚轻，可将动词不定式放在可将动词不定式放在后面，用后面，用itit作形式主作形式主语语(3)(3)用介词用介词forfor或或ofof引出动词不定式的引出动词不定式的逻辑主语逻辑主语It is+形容词形容词+for/of sb.to do sth.It is easy for me to swim.It is nice of you to help me.(3)(3)用介词用介词forfor或或ofof引出动词不定式的引出动词不定式的逻辑主语逻辑主语It is+形容词形容词+for/of sb.to do sth.作主语作主语easy difficultimportant danger

3、ouskindnicesmartclever作主语作主语forof动词不定式可动词不定式可以用在名词或以用在名词或者代词后面作者代词后面作定语定语I have a lot of clothes to wash.复合不定代词复合不定代词常用作不定式常用作不定式作后置定语作后置定语Do you have anything to do tonight.作定语作定语2.2.原因状语原因状语1.1.目的状语目的状语I get up early to catch the early bus.He felt excited to know this news.3.3.结果状语结果状语I am too tir

4、ed to walk.作状语作状语1.1.目的状语目的状语不定式可以放在连系动不定式可以放在连系动词词bebe后面作表语后面作表语Their duty is to look after the animals.作表语作表语动词不定式不动词不定式不带带toto的情况的情况He always makes students speak English loudly.不定式放在使役动词不定式放在使役动词have,make和和let之后之后不定式在感官动词不定式在感官动词feel,hear,see,watch,notice等等后面后面I often hear her sing songs in her room.不定式在不定式在why not和和had better 后后Why not go swimming tomorrow?Why dont you go swimming tomorrow?You had better have a rest.不定式在不定式在why not和和had better 后后重点掌握重点掌握