unit4单词讲解和练习

1、Unit 4 Dont eat in class讲解与练习词组 不得不做_ 在餐厅_ 运动鞋/会_ 戴帽子_ 穿制服_ . 在太阳下看书_ 在校期间的晚上_ 太多的规矩_ 对某人友好_ 十点之前_ 不要说话_ 准时_（及时）_练习做某事_ 洗餐具_上课迟到_ 和某人分享某物_重难点一、情态动词have to 的用法，意思是"必须、不得不"，它侧重于客观上的必要和外界的权威。（1）结构： 主语have to动词原形其他 （一般现在时，主语是第三人称单数时，用has to；句子是过去时，用had to.）如：We have to wear sneakers for gym cl

2、ass. 在体育课上，我们必须穿运动鞋。 （2）否定形式：主语don't have to动词原形其他（一般现在时，主语是第三人称单数时，用doesn't have to. 句子是过去时，用didn't have to）如：Nick doesn't have to wear a uniform. 尼克不必穿制服。（3） 疑问句：Do （Does或Did）主语have to 动词原形其他如：Do you have to stay at home on weekends? 周末你必须呆在家里吗？Yes, I do. / No, I don't. 是的，我必须。

3、不，我不必。随堂练习：1. _(Do) he have to go to bed by 11:00 last night? 2. Tom _（have)to practice the guitar every day. 3.I _(have) to get up at 5:00 am last Monday.二、情态动词can的用法（1）表示能力，"会""能"Can you play the guitar? 你会弹吉它吗？ （2）表示允许、许可，"可以"、"能"Can the students run in the

4、 hallways? 学生们可以在走廊上跑吗？注意： 同样是情态动词，can 和have to 的用法是有区别的，和大部分情态动词一样，can在否定句中，直接在can后加上not，在疑问句中，把can放到主语前面，并且没有人称和数的变化。 而随堂练习1. We can play football after class.(改为否定句）2. You have to finish your homework by ten.（改为一般疑问句）3、 hear，listen和sound都有"听"的意思，但三者是有区别的。（1）hear"听说"，侧重于"听

5、"的内容I'm sorry to hear that you are ill. 听说你生病了，我很难过。（2） listen"听"侧重于"听"这一动作。Listen to me carefully. 认真听我说。（3） sound"听起来"，它是系动词，后面接形容词等。That sounds great. 那听起来真不错。随堂练习1. I never_such an interesting story. 2.It _ like fun. 3.The children like to_music. 四、 No talk

6、ing ! "禁止交谈！"no后面加上名词或动名词（doing）也表示不要做某事。与don't +do的用法相似。随堂练习No smoking! (同义句改写）知识点解析1.Dont fight.不要打架。fight作动词，意为“打架、打仗”。fight for“为而斗争”，后面常接名词，表示为事业、自由等而斗争。Eg:They are fighting for freedom._fight with“和打架”，“同（并肩）战斗”，后只接表示人或国家的名词。Eg:Dont fight with him._。2.Ms./Mrs./Miss.Ms.：“女士”，用于婚姻状

7、况不明或不想区分婚否的女子的姓前。Mrs.：“夫人”，用于已婚女子姓前。 Madam:也用于已婚女子，意为“夫人、女士”，一般单独使用，不与姓连用 Miss.：“小姐”用于未婚女子姓前，还常用于年轻的女教师的姓前，可译为“老师”。3. 辨析： get to/reach/arrive 相同点：都是“到达“的意思不同点：get to+地点；reach+地点 arrive at+小地点（车站等）；arrive in+大地点（国家等）注意：get to与地点副词（here/there/home）不用介词toEg:I want to go to Beijing.I got home at 15:00.我

8、下午三点到的家。arrive是不及物动词，后面若接地点名词则要和in/at连用，接地点副词时则不用介词。Eg: I arrived home at 15:00. =I got home at 15:00._.他昨天到的上海。_.他昨天到的。reach是及物动词，后面直接接地点名词或副词。Eg:When will they reach here?4.remember“记得，记住”，是及物动词，可以直接加名词。remember doing sth记得已做某事（已做）Eg:I remember seeing him once._。remember to do sth 记得要做某事（还没做）Eg:Re

9、member to post the letter for me._。 forget“忘记，忘了”，作remember反义词时，用法和remember相同。Eg:不要忘记吃早饭。_ 早上我忘了关门了。_5.too many,too much与much too易混词组意义及用法例句too many形容词，“太，太多”，接可数名词There are too mang people in the park.too much形容词，“太多”，接不可数名词I have too much homework today.much too副词，“太，非常”，接形容词或副词My mother is much t

10、oo busy.6. either,too与also易混词意义及用法例句either“也”，用于否定句中，置于句末时用“，”隔开I wont go there,either.too“也”，用于肯定句句末，用“，”隔开I like dancing,too.also“也”，用于肯定句句中I also like English.重点语法 祈使句祈使句（Imperative Sentence）定义：用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句，祈使句最常用于表达命令，因此在学校文法中也常称为命令句。祈使句因对象（即主语）是第二人称，所以通常都省略。祈使句的动词都为一般现在时，句末则使用句号或

11、感叹号来表示结束。祈使句的肯定句：行为动词原形+其他 Be动词+adj let+sb+动原.Eg:Go and wash your hands._。命令 Be quiet, please.= Please be quiet._。请求 Be kind to our sister._。劝告 Watch your steps._。警告祈使句的否定通常使用“Don't ”，Don't+动词原形（行为动词/be动词）+其他Eg:Don't touch, please.请不要用手触摸。不要开门_ Don't be silly.别傻了。不要太累。_以Let开头的祈使句，否定形

12、式是在宾语后加not,Eg:Lets not do that again.我们别再那样做了。或者直接no +Ving Eg:不准抽烟._祈使句有时也把主语“You”表达出来，使对方听起来觉得柔和些，例如：Eg:You go and tell him, Chris.克立斯你去告诉他。随堂练习一、单词变化（10分）1.rule(复数)_ 2.outside(反义词) _ 3.wash(单三)_ 4.get to (同义词)_ 5. late(反义词)_ 6.loud (副词)_ 7.could (原形)_ 9.piano(复数) _ 10.snow (形容词) _二单词填空（10分） 1.We h

13、ave to wear sports shoes for g_ class. 2.Youd better not break the r_. 3. _ (not fight ) with each other in the classroom. 4.We can eat in the d_ hall every day5.Dont run in the h_ . Its dangerous. 6.No _(talk) in class!7.Grace is wearing the school u_ today. 8.The girl often comes back early on s_

14、nights. 9.What _ your teacher look like? She is tall and thin. 10. _(read) in the sun is bad for your eyes.三选择填空（20分） ( )3.-_ I take some photos in the hall? No, you_.A. Can, neednt B. Must, mustnt C. Could, wont D. May, mustnt( )4.Dont forget_ me this evening. A. to call B. call C. calls D. calling

15、( )5.Dont talk _ in the library. A. loudly B. louder C. low D. lowly( )6.I have _ rules in my home. We have _ homework to do today. A. too many, too much B. too much , many too C. too many, much too D. much too, many too( )7.-Can your brother swim? -_. A. Yes, he cant B. Yes, please . C. No, he cant

16、 D. Yes, he does A. must B. have to C. must to D. can( )9.Hes never _ class. A. arrive B. late for C. arrive late D. late. A. be in bed B. is bed C. stay bed D. lie bed( )11.Dont arrive late for class, _? A. do you B. arent you C. will you D. dont you( )12.” No_ !” says the sign. A. smoke B. smoking

17、 C. smokes D. to smoke( )15.-What did Mary have _breakfast this morning? -She got up late and hurried to school _ breakfast.A. for, without B. at, without C. for , after D. at, after( )16.This problem is too difficult. _ students can work it out.A. A few B. Few C. A little D. Little( )18. I hear the

18、re is going to _ a film tomorrow.A. is B. be C. have D. has六根据汉语完成句子（20分）1.我不得不做英语作业。 I _ _ do my English homework.我觉得我家的约束太多了。 I think I have _ _ rules in my house.我晚上10：00 前必须上床睡觉。 I have to _ in bed _ ten oclock in the evening.你认为你的英语课怎么样？ What do you _ _ your English class?我们不能在教室里吃东西。 We cant _

19、 in the _.放学后我得练弹钢琴。 I _ _ practice the piano _ school.有课的晚上我们不应该看电视。We shouldnt _ TV _ school _.十点钟前你必须得睡觉吗？ _ you _ _ be _ _ _ 10:00?音乐课上我们可以唱歌跳We _ sing and dance _ _ class.我们可以在食堂吃饭。 We _ eat in the school _ hall.阅读理解Carol and Susan are very good friends They are in the same _1_ at school and th

20、ey often visit _2_ home at weekends . Now they are _3_ eight years old. Carol's mother has got a new baby. Carol is very _14_ to have a little sister. So she is always talking about her to Susan. At first she is very _5_ in the new baby because she doesn't have any brothers or sisters. But _6_ some time she begins to get tired of Carol's endless talking (喋喋不休地谈论) about it. She also fells a little jealous (嫉妒) of her friend.One morning when the two girls _7_ in the school ground, Carol says to Susan, "Do you _8_, Sue, my baby sister has put on nearly h