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1、 . 九年级仁爱版Unit2Unit4知识点 U2 Topic 2 I. 重点词组. 下载可编辑 .1. as a result 结果2. here and there 到处3. in the beginning 一开始4. in danger 处于危险中5. cut down 砍倒6. change sth. into sth. 把变成7. prevent from 防止8. greenhouse effect 温室效应9. refer to 提到10.deal with 处理11.take up 占据12.cut off 中断II. 重点句型1. As we know, none of u
2、s likes pollution. 众所周知，没有人喜欢污染。 none与no one 的区别：a) none “全无”，既可指人也可指物，后常跟of 的短语; 作主语时，谓语动词既可用单数也可用复数；no one只指人，后不能跟of 的短语; 作主语时，谓语动词只用作单数。如： He has read none of these books.（指物）这些书他一本都没看过。 None of my friends like/ likes drawing.（指人）我的朋友们没有一个喜欢画画。 No one is here. 没有一个在这儿。b) none回答how many/ much的问题；n
3、o one回答who的问题。 如： A: How many students come to school by taxi? B: None. 有多少的学生搭出租车来上学？ 没有人。 A: How much water is there in the bottle? B: None. 瓶子里有多少水？ 一点儿也没有。 A: Who is in the room? B: No one. 谁在房中？没有人。2、Trees can also stop the wind blowing the earth away.树木也能防风固土。stop / prevent sb. /sth. (from ) d
4、oing sth. 阻止/ 防止 某人或某物做某事keep sb./sth. from doing sth. 阻止/ 防止 某人或某物做某事3、You may either take a bus or a taxi. 你们可能搭公车去或者是搭出租车去。 a) eitheror “要么要么; 或者或者” 并列连词,连接对等结构;连接主语时,根据就近原则。如： You may come either today or tomorrow. 你要么今天来，要么明天来。 We can either sing or dance. 我们可以唱歌或者跳舞。 Either you or he is right.
5、 要么你对，要么他对。 b) either 单独使用时，是代词，表“二者之一”既可指人也可指物；用作主语时，谓语动词用作单数。如： A：ould you like coffee or tea? B: Either is OK 你想要咖啡还是茶？随便都可以。 Either of us is right. 我们俩中有一人是对的。 III. 语法不定代词和不定副词：(一) 不定代词： 指人：someone/ somebody anyone/ anybody no one/ nobody everyone/everybody 指物：something anything nothing everythi
6、ng（二）不定副词指地点：somewhere anywhere nowhere everywhere（三）用法：1 some-复合代词/副词常用于肯定句；如：I saw someone in the room. 我看见房间里有人。There is something in the woods. 树林里有什么东西。2、any-复合代词/副词常用于否定句或疑问句；如：I didnt see anyone in the room. 我没看见有人在房间里。There isnt anything in the woods. 树林里没有什么东西。3、no- 复合代词/副词表全否定；如：I saw nobo
7、dy in the room. 我看见房间里没有人。There is nothing in the woods. 树林里没有什么东西。4、every- 复合代词/副词代替全部；如：Everyone is here. 大家都在这儿。It seems he knows everything. 似乎他知道一切。 some-复合代词/副词用于疑问句中时，表希望得到对方的肯定回答或表请求；如：Would you like something to drink? 你要点喝的东西吗？ any-复合代词/副词用于肯定句时，表“任何”；如：If people spit anywhere in public, t
8、hey should be punished. 如果人们在公众的任何地方吐痰，他们应该受罚。 不定代词作主语时，谓语动词用单数形式；如：No one knows this secret. 没有一人知道这个秘密。Everything goes well. 一切进展顺利。 如果有定语修饰,定语应放在不定代词或不定副词后；如：I have something important to tell you. 我有重要的事告诉你。There is nobody strange here. 这儿没有一个陌生人。 no= not any nobody = not anybody; nothing = not
9、anythingShe didnt say anything. = She said nothing. 她什么也没说。There is nobody strange here.= There isnt anybody strange here.这儿没有一个陌生人。Topic 3 I. 重点词组1. not onlybut also 不仅而且2. be supposed to 应该3. ought to 应该4. turn off 关掉5. instead of 代替6. on time 准时7. make sure 确保8. push forward向前推9. push down 向下10.p
10、ull up 向上拉11、encourage sb to do sth 鼓励某人做某事12、after all 毕竟 above all 最重要的是.II. 重点句型1. We should use both sides of paper, and reuse plastic bags rather than throw them away. 我们应该把纸的两面都使用，将塑料袋再次使用而不是轻易扔掉。a) both 修饰复数名词；而 either 修饰单数名词； 如：There are a lot of trees on both sides of the road.= There are a
11、 lot of trees on either side of the road. 在路的两边有许多树。b) rather than 表“（是）而不是”;连词, 连接对等结构, 相当于instead ofc) 如: I like coffee rather than tea. = I like coffee instead of tea. 我喜欢咖啡而不是茶. He likes listening to music rather than/ instead of singing. 他喜欢听音乐而不是唱歌. He wants to go today rather than/ instead of
12、 tomorrow. 他想今天走而不明天. I did my homework rather than watched TV. = I did my homework instead of watching TV. 昨晚我做作业了而不是看电视. 但rather than位于句首时, 后跟动词原形,它不受句中谓语动词的时态影响。如： Rather than do it by myself, I didnt ask for help.宁可自己干, 我没请人帮忙。2. Everyone is supposed to do it. 每个人都应该那样做。be supposed to do sth.指（按
13、规定、习惯、安排等）应当做某事；必须做某事；相当于should; 用于否定句时，表“允许”； 如：Teachers are supposed to/ should know a lot. 老师应该知道很多。You are not supposed to smoke here. 这里不允许抽烟。3. First, you ought to turn off the lights when you leave a room. 首先，当你离开房间的时候，应该随手关灯。ought to 情态动词, 表 “应该; 应当”; 语气比 should 强;指道义上应该做的事,有时含有责备或督促的语气。shou
14、ld 指主观上感到有责任或义务去做。如：You ought to help your mother do some housework.你应该帮你妈妈做些家务。We should study hard.我们应该努力学习。其否定式和疑问式：You oughtnt to get up so late in the morning.你早晨不应该起这么晚。Ought I to tell her the bad news? 我该告诉她坏消息吗？Yes, you ought. No, you oughtnt. III. 语法并列句：由两个或两个以上并列而又相互独立的简单句构成。结构为：简单句+并列连词+简单句常用的并列连词有：and, or, but, while, not only but alsoe.g. 1. The river is dirty and the temperature of the earth is rising.2. They work well, but they are slow and cant run for long. Unit 3 Topic1 一.重点词语1.be able to=can 能够,会2.cant wait to do sth.迫不急待地做某事3.have
