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1、开放英语（2）各单元语法学习重点（单元27 31）Unit 27:1、take after, look like, be like（1）take after(在家中年长人的性格长相像。He takes after his father. They are both wery musical.他像他父亲，他们都很有音乐细胞。（2）look like (外表)长得像She looks like her mum.They have the same eyes.她长得像她母亲，眼睛都一样。（3）be like ( 性格或行为上)像The daughter is like her mother, alw
2、ays rushing around.女儿很像妈妈，总是忙来忙去。2、used to 表示现在已经不存在的过去的习惯或常规。（1）肯定句：Father used to smoke.（2）否定句：Father didnt use to smoke, but he does now.（3）疑问句：Did you ues to stayl up late? Yes,I did.3、for 和since 常用于完成时的时间（1）for 表示一段时间Hes live in the school for 20 years.（2）since:自从He has lived here since 1985.4、
3、if 真实条件句（1） 用法：表示可能的条件及可能带来的结果。（2） 结构：if从句（现在时），主语（将来时）If it rains, I will not go.I will be much happier if he succeeds.If从句既可放句首，也可放句尾。5、so的不同表达（1）I find him so interesting （强调“如此”）（2）So if I do it ,you wont be able to come here.（结果“因此”）（3）I like the film. Yes , so do I .(倒装“也”)（3） He reads more so
4、 that he can pass the exeme.(目的“这样”)Unit 281、现在完成时的用法（1）过去发生的动作，经历，对现在产生影响。事情发生在过去，但着眼点在现在。We have discussed about the plan.（2）过去的经历对现在产生的影响。Ive practised a lot.（3）与ever (曾经) never(从不)连用时：Heve you ever been to Paris? 放在分词前，一般在问句中。He s never been to Mexico. 意为“从不”（4）have been to 和have goneXiao Wang h
5、as been to Wuzhou.(曾去过)Xiao Wang has gone to Wuzhou.(去了)2、与现在完成时连用的副词：除了ever, never 还有just, yet , already.（1）just（刚刚）Theyve just come in.放在助动词与分词之前（2）yet表示要做的事情没做。放句末，一般用于问句或否定句。Have you booked the ticked yet?No, I havent booked it yet.（3）already:“已经”用于肯定句，放在have(has)与分词之间，也可放句尾。I ve already visited
6、 my teacher.Ive visited my teacher already.Unit 29 A Weekend Trip (周末旅游)1、描述方位（1）一个地方在另一个地方的东（西、南、北）方向时：east(south,west,north) of Chengdu is northwest of Chongqing.成都位于重庆的西北。（2）一个地方在另一个地方范围内的某个方位：in the east(south, west, notth) ofKunming is in the southwest of China.昆明在中国的西南。（3）在某条河或者海岸线上，用介词on:Qing
7、dao is on the coast.青岛在海边。（4）表示两地之间的距离：数词+距离单位+from:Beiing is 1200 kilometers from Shanghai.北京离上海有1200千米远。（5）离某地的旅途长短：a+时间+旅行方式+from.Nanning is a four-hour train journey from Guilin. 坐火车到桂林用四个小时。2、提出建议Why not go to the cinema?How about visiting our friend next week?Why dont you go on with it?What ab
8、out going to have a rest?You should visit dali ,it is so nice. If I were you ,Id would go first.3、过去进行时（1） 用法：表示过去某时正在发生的动作（2） 结构：主语+was(were)+动词的现在分词I was writing a letter at 4 yesterday.They were playing bsketball yesterday afternoon.（3） 过去进行时与一般过去时连用，前后两个句子可用when, while, as ,and 等连接。While I was h
9、aving dinner, someone knocked the door.As I was watching TV,he called me .I was driving along the motorway when my car broke down.Unit 31 A New Job (新工作)1、 worry(1) be worried about 担心He was worried about the test.（他为考试担心）(1) worry+直接宾语：使烦恼，焦虑The new work worried him so much.新的工作让他挺操心。2、与动词、名词或形容词连用的介词在疑问句中的位置：在特殊疑问句中，与动词、名词或形容词连用的介词一般紧随与其连用的相应动词，名词或形容词之后：What are they interested in? (形容词+介词)他们对什么感兴趣？What has he got experience in? （名词+介词）他在什么方面获得经验？Who were you talking about? （动词+介词）你在谈论谁？What are you worried about? （动词+介词）你担心什么呢？
