三、重点语法——动词不定式
1、 不定式的肯定形式由“to+动词原形”构成。 否定形式“not to+动词原形”。
2、 to只是不定式的一个符号，没有任何实际意义。
3、 不定式可以作除谓语以外的其他句子成分，如主语，宾语，表语，定语，状语，宾补。
1)作主语, 常用it（形式主语）代替, 不定式放在后面做真正主语. It is hard to say. 很难说。
It is important to learn English well. 学好英语非常重要。
注：①如果要说明动词不定式的动作是谁做的，可在不定式前加一个for sb作它的逻辑主语。
如：It’s difficult for us to finish the work.
②如果表语是kind, nice, right, wrong,good,clever等表人的性格，品质等形容词，则加of.
如:It’s very kind of you to help me.=You are kind to help me. 2)作表语, 常用在系动词之后.
Your group’s task is to find out the cost to go by train. 你小组的任务是去弄清搭火车的费用。 She seems to be happy. 她似乎很快乐。
4)作宾语, 常用在want; like; hope; begin; try; forget; learn; plan; decide; need 等及物动词后,构成动宾结构。如:
I want to buy some books. 我想去买一些书。
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She likes to join the English Club. 她喜欢加入英语俱乐部。 提示：跟动词不定式作宾语的动词有:
??? 想预订房间want to book a room ??? 决定去春游decide to go on a spring field trip ??? 计划骑车去那儿 plan to cycle there ??? 选择乘火车choose to take a train ??? 希望玩得愉快 hope to have a good time ??? 拒绝与别人说话 refuse to talk with others 5)作宾补，①跟动词不定式作宾补的动词: v. + sb. (not ) to do sth. 告诉tell 鼓励 encourage 命令order 使 get 想要want / would like 邀请 invite 教teach 要求 ask
②跟动词不定式作宾补的动词（ v. + sb. (not ) do sth.）--to省略 “听、观、使、让、帮”---- hear, see, watch, make, let, help 但是help也可用help sb. to do sth. 的结构 如: 我看见他几乎每天都打篮球。
I see him play basketball almost every day. 老板强迫工人整天干活。
The boss makes the workers work all day. 6)作定语，常用在被修饰的名词/代词之后。
I have some exciting news to tell you. 我有一些令人激动的消息告诉你。 He wants to find a chair to sit on. 他想找把椅子坐。
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下列动词常接动词不定式作定语：chance, time, wish, way, the first, the only, the second, the last, promise等。 如：He has no time to see the film. 7) 动词不定式作目的状语:
① 我要去北京看长城。 I want to go to Beijing to visit the Great Wall.
② 为了赶上早班车，他每天很早起床。 He gets up early to catch the early bus every day.
③ 他们决定上网以获取更多的信息。 They decided to search the Internet to get more information.
Topic 2 How about exploring Tian’anmen Square
一、重点词组
1 speak to 对某人说话
2 be busy doing sth 忙着做某事
3 ride one’s bicycle to = cycle to 骑自行车去、、、 4 would like sb to do sth = want sb to do sth 想要做某事
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5 two and a half hours = two hours and a half 两个半小时 6 in the …of 在、、、里 on the …of 在、、边上 to the …of相隔 7 be surprised at sth 对某事吃惊 be surprised to do sth to one’s surprise
8 in different directions在不同的方向 in all directions 在所有方向 9 step on one’s feet 10 rush out of 冲出 11 ride to 骑自行车去
12 be famous for 因、、而出名 be famous as 作为、、出名 13 can’t / couldn’t help doing 禁不住做某事 14 here and there = every where 到处 15 thank goodness 谢天谢地
16 have fun doing sth 做某事很有趣；
Unit 6 Topic 2 Section A
1、 While you were enjoying your trip, I was busy preparing for my exams.
你在愉快地游玩的时候，我正忙着准备考试。
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（1）、while在此引导时间状语从句，表示持续性的动作或状态，只与延续性动词连用，侧重表示主句和从句动作同时发生，有对比的意味，常用现在进行时或过去进行时。如： I was doing my homework while mom was cooking. 妈妈做饭时，我在做作业。
（2）、be busy doing sth “忙于做某事”
如：现在我正忙着做饭。______________________________________ （3）、prepare for （doing）sth “准备（做）某事” 考题链接：
① The boys are busy ____________ （prepare）for their football match. ② --What were you and your sister doing at this time yesterday, Lily? —I was doing my homework _________ she was watching TV.
A.
A. when B. while C. after D. before
Unit 6 Topic 2 Section B
2、 It’s 880 meters long from north to south and 500 meters wide from east to west.
它南北长880米，东西宽500米。
基数词+长度单位+long/wide/high/deep “多少（米）长/宽/高/深”如： The desk is about 1.2 meters long. 这张课桌大约有1.2米长。 试比较以下两句话：
① The boy is 10 years old. 这个男孩10岁 ② He is a 10-year-old boy.这是个10岁的男孩。
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