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Unit 6 Birdwatching
Lesson 4
【学习目标】
1．学习用动词不定式to do和 in order to表示目的。
2．掌握“动词+宾语+动词不定式to do”结构。
【学习重难点】
掌握“动词+宾语+动词不定式to do”结构。
【学习过程】
自主先学
Thinking: Why do many tourists go to Zhalong every year
____________________________________________
To watch the birds 在句中表___________
We can use to-infinitives to express purpose. (表目的)
e.g. I often go to the market to watch the birds.
Now the Chinese government has made laws to prevent all these things.
We can also use in order to express purposes. This is more formal than to-infinitives. (表达更正式，更清楚)
e.g. Some people want to make the wetlands smaller in order to have more space for farms and buildings.
Take a notebook with you in order to write down what you see.
We can use some verbs with objects and to-infinitives. (动词不定式在句中作宾语补足语)
e.g. We are now inviting them to help us.
动词不定式作宾语补足语，有带to和不带to的两种形式。
常跟带to的动词不定式作宾语补足语的动词有：ask, tell, order, invite, get, allow, wish, want, encourage, advise, warn, like, love, hate等。
肯定：want sb. to do 否定：_____________________
need sb. to do ________________________________
advise sb. to do ________________________________
ask sb. to do __________________________________
tell sb. to do __________________________________
invite sb. to do _________________________________
常跟不带to的动词不定式作宾语补足语的动词有：感官动词：hear, feel, see, watch, notice等；使役动词let，make和have。
动词help后面的动词不定式可带to，也可不带to。
小组合作
完成句子，仔细思考
1．他来上海拜访他的朋友。
He came to Shanghai _____________ his friends.
2．政府应该立法来保护野生生物。
The government should make laws__________ wildlife.
总结_______________________________
3．为了赢得下个月的比赛, 他们每天刻苦训练。
They practice hard every day in order to win the match next month.
总结_______________________________
注意：由in order to引导的目的状语，既可以置于句尾，也可以置于句首。
e.g. They started early in order to get there in time.
In order to get there in time, they started early.
探究展示
动词不定式（to do）的一些常见用法：(其否定形式为: not to do)
1．在一些动词后作宾语, 即: 动词 + to do
他选择了什么也不说。He ________ _______ _______ ________.
2．动词不定式作目的状语。相当于 In order to do
为了获取更多的信息，他日夜上网查寻。
_____ _____ more information, he _____ the Internet all day and all night.
他为女儿扎了个漂亮的风筝逗她乐。
He ________ a nice kite for his daughter _______ _______ her ________.
3．动词不定式作宾语补足语，即：动词 + 宾语 + to do
老师想要我们谈谈我们的未来计划。
The teacher ________ _______ ______ _______ _______ our future plans.
4．疑问词可以和动词不定式构成短语。
有这么多纪念品，我不知道该选择哪一个。
There’re ____ ____ souvenirs, and I don’t know _____ ____ ____ ____.
【达标检测】
根据句意或括号里所给词的适当形式填空。
1．My brother Tom failed ____________ (pass) the exam.
2．My mother agreed _____________ (not go) shopping.
3．The mother made the poor girl ________ (play) the piano for five hours a day.
4．I hope you can choose me ___________ (be) the monitor.
5．Sandy finished___________ (read) the book yesterday.
6．_______ (thank) him for saving her life, she decided _______ (write) a thank-you letter to him tomorrow.
7．Our teacher often asks us ____________ any noise in class. (not make)
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