内容正文:
Unit 5
Do you want to watch a game show?
Section A The Second Period
Grammar Focus-3c
I like news , because I expect to learn something from it.I hope to find out what’s going on around the world.
Free talk
What do you think of news?
Warming up
Fill in the blanks with right forms of the given words.
1.A:Do you want (watch)the news?
B:Yes,I do./ No,I don’t.
A:What do you plan (watch) tonight?
B:I plan (watch) Days of Our Past.
2.A:Why do you like watching the news?
B:Because I hope (find)out what’s going on around the world.
3.A:What can you expect (learn)from sitcoms?
B:I can learn some great jokes.
to watch
to watch
to watch
to find
to learn
Lead-in : Find out the rules
讨论:这三句话中,空的前后都是 词,它们应该用 来连接,它和第 个
词构成的结构形式在句中作第
个 词的 。
总结:在英语中,两个动词连接时,可以在第二个动词前加 ,to do可以作前面动词的宾语。to do即“to+动词原形”,被称为动词不定式,其中
是不定式符号,动词不定式没有人称和数的变化,它和其后的名词等构成不定式短语。
动
to
二
动
一
动
宾语
to
to
Presentation
动词不定式的构成及用法
动词不定式由“to+动词原形”构成,有时可以省略to。动词不定式在句中可作主语、宾语、宾语补足语、定语、状语等。动词不定式在句中不作谓语,所以没有人称和数的变化,其否定式在to前加not。
【考点1】作主语
1)不定式直接作主语
e.g.To say is easy , but to do is not easy .
2)it作形式主语,不定式(短语)作真正的主语
e.g.It is difficult for me to learn maths well .
【考点2】作宾语
1)在want 、plan、hope、wish、decide、learn、begin、start、expect、forget、remember等动词后作宾语。
e.g.我打算明天晚上去看一部电影。
I plan to see a film tomorrow evening .
2)在know、decide、remember等动词后可用“疑问词 + 动词不定式”作宾语。
e.g.我不想待在家里,但是我不知道去哪里。
I don't want to stay at home , but I don't know where to go .
【速记】
后可跟动词不定式的动词
需要拒绝莫忘记(need , refuse , forget );
想要学习就努力(want , learn , try );
希望帮助并同意(hope/wish , help , agree );
喜欢决定后开始(like / love , decide , begin / start )。
【考点3】作宾语补足语
1)在teach , ask , allow , invite等动词后用不定式作宾补。
e.g. 我父母允许我这周末玩电脑游戏。
My parents allow me to play computer games at weekends .
2)在let , make,have等动词后用省略to的不定式作宾补。
e.g.我妈妈常常让我擦窗户。
My mother often makes me clean the windows.
让我们一起去散步吧。
Let's take a walk together .
【考点4】作定语
不定式在句中作定语,置于被修饰的名词或代词之后。
e.g. 她是第一个想出这个