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1、 GrammarGrammar（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 Grammar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
2、的事。 = Its not easy to learn a foreign 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 list
3、en to 3. I hope (travel) all over the world one day.to travel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
4、构的常用动词有 tell. wish, ask, want like, beg, invite,warn, allow,encourage,advise 等。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 te
5、ll you a good newsWe have a lot of homework to do every day.I have a good news to tell you.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choose hope offer want decide learn plan wishThings to rememberThings to rememberWe can use question words + to + infinitives after decide, know,
6、 learn and remember.Do you know how to help disabled children? A1 Mark and his mother visited Vivien. Mark is telling his friends about the visit. Complete his words with the correct forms of the verbs in brackets.We (1) _(decide/ meet) Vivien today. We (2)_(want/help) her in some way. When we arriv
7、ed, Vivien was very happy. She(3)_(begin/talk) to me about her school. She said, “I (4)_(like/ go) to school, but I dont have any friends. I feel lonely.”Mum gave her some advice. Then Mum asked me to give Vivien her present, but I (5)_(forget/bring) it! Vivien said, “Its OK. I (6)_ (hope/see) you a
8、gain soon.”decided to meetwanted to helpbegan to talklike to goforgot to bringhope to seeB.Betty is visiting Cindy in the hospital. Complete their conversation with the correct forms of the verbs in brackets.Betty: Morning, Cindy. Were organizing a painting competition for the children in hospital.
9、Well (1)_ them _(ask/paint) pictures. Would you like to take part in the competition?Cindy: Yes, Id love to. I want to paint a picture of the park near my home, but the doctor wont (2)_ me _(let/go) out. He (3)_ me _(want/stay) in hospital.askletgowantsto stayto paintBetty: Do you (4)_ me _(want/tak
10、e) some photos of that park for you?Cindy: Yes. That would be very kind of you.Betty: Ill go there this weekend. Then Ill bring the photos to you next week and (5)_ you _(teach/paint).Cindy: Thanks for your help.teachto paintwantto take C.Use the information in the reports on page 3 to answer these
11、questions. Use the correct infinitives in your answers.1Why did the three teenagers offer to do somevoluntary work during the school holidays? They offered to do some voluntary work _ children in need.2Why did Betty go to the childrens hospital? She went to the hospital _ a painting competition for
12、the children there.3Why did Betty go to the park near Cindys home?She went there _ some photos.to helpto taketo organize4 Why did Mark and his mother teach Vivien to tell stories?They taught Vivien to tell stories _ her express her feelings.5 Why did Annie teach disabled children to sing?She taught
13、them to sing _ them joy and peace.to helpto bring用所给单词的适当形式填空。用所给单词的适当形式填空。1.Our teachers always make us _(study). 2.She would like you _(come) to her home.3. They want _(go)shopping. 4. The policeman asked us _(not play) in the street. 5.She plans_(visit) her aunt.studyto cometo gonot to playto visit 填空。填空。1. I am _(plan)_(help) the poor children.2. I am thinking about _(play) football with my friends.to helpplanningplaying