八年级英语Detectives and crimes课件3.ppt

1、 肯定结构：肯定结构：to+do否定结构：否定结构：not+to do用法：动词不定式具有名词，形容词用法：动词不定式具有名词，形容词和副词的特征，它在句中可充当主语，和副词的特征，它在句中可充当主语，宾语，定语，表语和状语宾语，定语，表语和状语（一）作主语（一）作主语1.To learn English well is not easy.It is not easy to learn English well.2.To listen to his speech is a great pleasure.It is a great pleasure to listen to his speech

2、.(二）作表语二）作表语1.My job today is to cook lunch and do some cleaning.2.Our plan is to have a picnic in the morning.（三）作宾语（三）作宾语1.He decided to buy some flowers for her.2.She wants to apologize for being late.3.Please dont forget to bring your medicine next time.(四）作定语四）作定语1.I have many things to do toda

3、y.2.She has something important to tell you.3.He is always the first one to arrive at the school every day.（五）作状语（五）作状语1.He has come to clean the carpet for us.2.My brother rode to his friends home to have a party.3.He is too young to lift the bucket of water.4.Are you old enough to join the army?5.

4、I am glad to see you again.ExercisesI.选择填空选择填空1.We had no chairs _.A.sit B.to sit in C.be sit D.to sit2.These are both very good.I can hardly decide _.A.which to buy B.which will buy C.what to buy D.what will buy3.The boy was too frightened _ when he saw the dog.A.not to move B.to move C.so to move

5、D.to be movingB A B4.He is _ the apples in the tree.A.too tall to reach B.to tall to reach C.tall enough to reach D.enough tall to reach5.After working for more than one hour,they stopped _.A.resting B.to have a rest C.having a rest D.rest6.You _,as it is raining outside.A.had better not to go out B

6、.had not better go out C.Had better to not go out D.had better not go outCBD7._ the way to the bookshop was just what she wanted to know.A.How to find B.To find C.How find D.to talk with8.He felt very lonely at night because he had nobody _.A.to talk B.to talk about C.talking D.to talk with9.Could y

7、ou tell me _ a letter in English?A.when to write B.who to write C.how to write D.Wwhere to write10.It was kind _ her home.A.of you taking B.for you to take C.of you to take D.at you takeA D CCII.用动词不定式的正确形式填空用动词不定式的正确形式填空1.It is my job _(teach)you English.2.They came here _(see)you.3.I want _(go)ove

8、r my lessons and I want you _(do)so,too.4.The man made up his mind_(not sell)his bike.5.I was very pleased _(see)him back.to teach to see to go to do not to sell to see6.Lets _(go)and _(have)a look at his baby.7.I often see him _(do)shopping in this shop.8.She was invited _ (give)a speech at this sc

9、hool.9.Why not _(do)it once more.10.I am thirsty.Please get me something _(drink).go have do to give do to drink11.The question is difficult _(answer).12._(understand)the language is easier than _(use)it.13.My work today is _(clean)the kitchen.14.Please go upstairs and ask then _(not make)too much n

10、oise.15.The water is too dirty for us _(swim)in.to answerTo understand to use to clean not to make to swimFinish Language A2Answers:2forgot to switch off3 remembered to lock4 failed to catch5 managed to get on6started to read7 refused to speak8 offered to buy 肯定结构：肯定结构：do+ing 否定结构：否定结构：not+doing用法：动

11、词不定式具有名词，动词用法：动词不定式具有名词，动词的特征，它在句中可充当主语，宾语，的特征，它在句中可充当主语，宾语，定语和表语定语和表语(一)作主语1.Learning English is not an easy thing to do.2.Seeing is believing.(二）作宾语二）作宾语1.I remember seeing him something ago.2.She often suggests climbing.3.They enjoy playing computer games.4.Im sorry for not being able to explain

12、it clearly.（三）作表语（三）作表语1.His work is taking hamburgers to our customers.2.His hobby is making model planes.（四）作定语（四）作定语1.There is a teaching table in the front of the classroom.2.They are swimming in the swimming-pool.Exercises用动词的正确形式填空：用动词的正确形式填空：1.When she finishes _,I will ask her some questions

13、.(speak)2.Im sorry I have forgot _ my book.(bring)3.I would like _ a cup of tea.(have)4.We often practise _ English in the morning.(read)5.She often suggests _ hills.(climb)6.We all enjoy _ to music.(listen)speaking to bring to have reading climbing listeningFinish Vocabulary B4Answers:1.promised to take2.finish working3.like eating/to eat4.go shopping5 want to buy