八年级英语下册Unit1Helpingthoseinneedgrammar课件(新版)牛津深圳版.ppt--（课件中不含音视频）

1、（1 1）基本形式：）基本形式：to+动词原形动词原形（在某些情况下可以不带（在某些情况下可以不带 to）（2 2）特点）特点 ：C.有时态和语态的变化有时态和语态的变化（被动语态的形式为（被动语态的形式为 to be +动词过去动词过去分词）分词）B.可以有自己的宾语和状语可以有自己的宾语和状语 动词不定式动词不定式 To learn a foreign language is not easy.It is good others.帮助他人是件好事。It is exciting the Internet.上网是件令人兴奋的事。=Its not easy to learn a foreign

2、language.动词不定式用法动词不定式用法B、作表语、作表语to clean the classroom 动词不定式动词不定式C 作宾语作宾语 1)动词动词+to do常见动词有常见动词有 choose,hope,offer,want,decide,learn,plan,wish,agree,fail等等1.He decided (buy)the camera.to buy 2.I want (listen to)some music after class.to listen to 3.I hope (travel)all over the world one day.to travel

3、动词不定式动词不定式2)动词动词+疑问词疑问词+to do 动词不定式动词不定式3)动词动词+it(形式宾语）形式宾语）+宾补宾补+to doI find it important to learn English我发现很难和他好好相处.我发现在炎热的夏天很容易入睡动词不定式动词不定式1)动词动词+宾语宾语+to do Li Mei asked me to show her the new dictionary.注：有以上结构的常用动词有注：有以上结构的常用动词有 tell.wish,ask,want like,beg,invite,warn,allow,encourage,advise 等。

4、等。2)动词动词+宾语宾语+do(不带不带 to 的不定式的不定式)注：常用的动词是注：常用的动词是:感官动词感官动词see,hear,feel,watch,notice；使役动词使役动词 have,make,let.动词不定式做宾补动词不定式做宾补 E、作状语、作状语可以表目的、表结果、表原因可以表目的、表结果、表原因F、作定语、作定语（必须后置）（必须后置）I came here (告诉你一个好消息)to tell you a good newsWe have a lot of homework to do every day.I have a good news to tell you.

5、我们每天有很多作业要做.我有个好消息要告诉你.动词不定式动词不定式 not+to do动词不定式的否定形式动词不定式的否定形式5.Im thirsty.Would you please give me something _.A.drunk B.to drink C.to be drunk D .for drinking6.Tom is the first _ to school.A.get B.to get C.getting D .Got7.The boy wanted to ride his bicycle in the street,but his mother told him _.

6、A.not to B.not to do C.not do it D.do not to 8.I saw him _ out of the room.A.go B.had gone C.has gone D.goes 9.-_ more about tomorrows weather,call 121.-OK,I will.Thank you.A.Know B.Knowing C.To know D.Known10.We must do everything we can _ waste water from running into rivers.A.keep B.kept C.to keep D.keeping11.Lets _ play in the street.Father tells me _ do so.A.not to；not to B.not；not to C.dont；to not D.not to；dont