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非谓语动词1.ppt

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非谓语动词1.ppt

上传人:tmm958758 2021/6/24 文件大小:593 KB

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文档介绍:非谓语动词(动词不定式)
成功学****15—20分钟)
成功目标:知识技能目标:掌握动词不定式的用法(中考重点)
成功自学
构成:肯定式: to +动词原形 , 否定式: not to +动词原形:
动词不定式的常见用法:
A、不定式作主语:
(1)To learn English well is not easy.
(2)To protect our environment is very important
当不定式作主语时****惯上用作it形式主语,而将动词不定式后置,构成固定句型:
It’s +adj +to do sth. (1)(2)两句话可改为:
(1)__________________________________
(2)___________________________________
It’s not easy to learn English well.
It’s important to protect our environment
B、不定式作宾语:V + to do sth
常见的只能跟to不定式的动词及短语:
想要want 希望wish 希望hope 决定decide 学会learn 计划plan 迫不及待can’t wait 想要would like 准备get ready 负担不起can’t afford
试翻译:她买不起一个照相机
___________________________________________________.
C、不定式作宾语补足语:构成:V + sb. to do sth.
常见动词:请、叫ask 告诉tell 想要want 邀请invite 允许allow喜欢like
警告warn 鼓励encourage 教teach 想要would like
试翻译:Lucy 经常教我学英语。
She can’t afford to buy a camera.
Lucy often teaches me to learn English.
D、不定式作定语
熟记下列短语:something to eat/drink ,anything else to say, much work to do ,something nice to eat,
lots of housework to do
例: have a lot of homework to do.
you have anything to say?
试翻译:我爸有重要的事要告诉我。
__________________________________________________
E、不定式与疑问词连用,构成不定式短语,作宾语
1. I don’t know where to go . 2. He didn’t know what to do .
you tell me how to get there ? 4. I can’t decide which to choose.
“疑问词 + 不定式” 结构可以转换为从句形式
(1)I don’t know where I will go.