九年级英语全册《Unit3 Teenage problems (Grammar)》课件 人教新目标版

Teaching aims(教学目标): To -infinitives ‘wh’ words + to do

Revision: 一 用所给词的适当形式填空。 not to make 1.He asked his brother ______________ ( not make )a noise. (宾补) to help 2.Ask him to do what he can__________ (help) us, will you? (目的状语) 3. You try _________(do) everything to do differently. (宾语) to be 4. David has all the qualities _______ (be) the chairperson. (定语)

to be 5. My dream is ______(be) a great football player. (表语) To do 6. ______ (do) my homework is important (主语) 7. Can you advise me how ____________ to achieve (achieve ) a balance between my homework and my hobbies (与疑问词连用)

动词不定式的形式： to do

1. 作主语 2. 作宾语 3. 作宾语补足语 4. 作定语 5. 作状语 6. 作表语 8. 与疑问词等连用

9. 作独立成分

三. 用法/ 功能(1). 主语

To see _______(see) is to believe. To learn __________(learn) is important. It’s important to learn.不定式作主语时,往往放在谓语之后, 用it作形式主语.

三. 用法/ 功能(2) 表语

to help My job is ________ (help) the patient. Your task is ________ (clean) the to clean classroom. dream, duty, work, job, aim/purpose等 作主语时表语常用不定式 她的职责是照顾这些小孩。 to look after the children Her duty is _________________________.

(3) 宾语 to do so much work I want to refuse ____________________ ( 做如此多的功课). The boy promises not to play _________(not play) computer games any more. to spare Millie found it difficult _________(spare) time for hobbies. think/ consider/ find it + adj.+ to do

advise, tell, allow, help, ask, want等

(4) 宾补 to clean the The teacher advised me _________ blackboard. ____________(擦黑板).

一感

feel

let 三让 have make 半帮助: help

listen to 二听 hear watch 四看见: see notice look at

I made him do his work. was made to do He ______________his work (by me). to read He was noticed(注意到) __________ (read) books alone on the classroom. allowed to stay The teenagers are not _______________ up late outside ______________.(允许在外熬夜)

(5). 定语

to say I have something ______ (say). to do He has a lot of homework ________(do). to live in He is looking for a room________(居住). to worry about There is nothing______________(担心).(不要忘了有些不定式中所需要的要有介词.)

请给我一支写字的笔. to write with Please give me a pen______________.

注：不定式所修饰的名词如果是time, place或way,不定式后面的介词习惯 上要省去他没钱没地方住。 He had no money and no place to live _________. to study I can’t find a quite place _______(学习)

(6) 状语 to see you I came here___________.(为了见你) (表目的) to hear that I’m sorry ___________.(听到那件事) (表原因) not to forgive You are silly enough ______________ (不原谅) others for their mistakes. (表结果)

(7)

独立结构

To tell the truth, I don’t agree with you. to be honest, to tell the truth

To tell the truth ________________(说实话), sometimes, I quarrel with my cousin. To be honest ______________(说实在的), this is the worst book I have ever read.

注：关于to(1).不定式中的动词上文已出现过,下文要 省略该动词.

eg: Would you like to go with me ? ___________(我很乐意). I’d like to(2). 不定式是to be 结构, be 不可省.

eg: Would you like to be a teacher? I’d like to be _____________(我很乐意).(3) 当两个不定式用and连接时，第二‘to’ 通 常省略。