七年级英语下册Unit4-Don’t-eat-in-class单元知识点汇总

1、七年级英语下册 unit4-don' t-eat-in-class 单 元知识点汇总unit 4 don't eat in class.1 .祈使句的构成和用法概念：祈使句是用来表示请求、命令、叮嘱、邀请、劝告17等的句子。结构：祈使句一般以动词原形开头，句末用句号或感叹号。a) do型祈使句肯定结构：动词原形+宾语+其它否定结构：doitt+动词原形+宾语open the door.开门doitt play soccer in the classroom.不要在教室里踢足球。b)be型祈使句肯定结构：be+表语否定结构：doitt+be+表语be careful next t

2、ime!下次要细心!don9t be late for school.上学不要迟到。c) let型祈使句肯定结构：let+宾语+动词原形+其它否定结构：don，t+let+宾语+动词原形+其它let5s not+动词原形+其它let9s go home.我。j 回家吧。don9t let him go shopping.不要让他去购物。d)no型祈使句结构：no+动词ing或no+名词。这种结构的祈使句一般 用来表示禁止。no talking 禁止讲话(=don't talk=stop talking)no photos 禁止拍照(=don9t take photos)2.短语go o

3、ut外出(娱乐)you can't go out onschool nights.在上学的晚上你不能出去(玩)。please take out atake out掏出，取出piece of paper.请拿出一张纸。do the dishes=wash the dishes 清洗餐具 please wash the dishes after dinner.晚饭后请清洗餐具。think about sth 考虑let's think aboutthe fruit and vegetables.让我们考虑一下水果和蔬菜。have fun=have a good time 玩得高兴

4、心!good iuck(to sb)祝(某人)好运 luck.=good luck to you.祝你好运。sb be lucky某人运气好气好。wait for sb等待某人have fun.玩得开wish you goodshe is hicky.她运1 am waiting foryou.我一直在等你。arrive late for=be late for 为.而迟到for work.上班不要迟到。fight with sb和某人大家your classmates.不要和你的同学打架。make friends 交朋友friends with you.我想和你交朋友。don't a

5、rrive latedon't fight withi want to makemake sure 确信 he is at home.请确认他在家。make one's bed 铺床please make sureevery morning imust make my bed.每天早上我必须铺床。make noise制造噪音不要制造噪音。keep quiet=be quiet 保持安静don't make noise.keep quiet, please>请保持安静。=please keep quiet.keep healthy保持健康running can ke

6、epushealthy.跑步能保持我们健康。keep cool保持冷静keep cool, don'tfight with him.保持冷静，不要和他打架。keep up with 跟上you must keep upwith other students.你必须跟上其他学生。2. rule规贝ij（复数形式rules）family rules 家规school rules 校规follow the rules=obey the rules 遵守规则break the rules 违反规则make rules制定规则3. “到达”的用法表达g't to+地方arrive in+

7、大地方arrive at+小地方reach+地方get to school = reach school = arrive at school 到达学校因此介词to、in、at要省注意：home, there, here 是副词,如get home到家4. listen to、hear和sound辨析：两者都表示“听”的意思listen有意识地听，但不一定听到什么，强调“听”这个动作，结构"iisten+to+宾语”hear强调听的结果，“听见”。sound听起来，系动词+adj做表语he can't hear you because he is listening to m

8、usic now他听不见你，因为他正在听音乐。that sounds interesting.那听起来有趣。5. time及相关短语f表时间，不可数名词 what time is it now?现在是什z时间？（几点了？）time表次数，可数名词three times三次at the same time 同时in time及时on time准时all the time 一直，总是=alwaysfor the first time 第一次at times有时,偶尔in the morning/in the afternoon/in the evening 在早上/在 下午/在晚上at noon=

9、in the middle of the day 在中午at night泛指在晚上on school days在上学的白天on school nights在上学的晚上6. wear、put on 和 get dressed 辨析 , i、today.她今天穿着一件红裙子。put on 表”穿上、戴上”的动作 please put on your coat.wear表“穿着戴着”的状态 o she is wearing a red dressit is very cold outside.请穿上你的外套，外面很冷。get dressed是get +adj的用法，dressed是一个过去分 词充当

10、形容词，意思是“穿好衣服的”=dress oneself7. have to 和 must 辨析have to +动词原形，强调客观需要；否定形式don5t have to不必must+动词原形，强调主观看法because it is raining outside, i have to take an umbrella. 为外面正在下雨，我不得不带伞。you don't have to get up so early.你不必这么早起床。i must flnish my homework before half past eight in theevening .我必须在晚上八点半之前

11、完成我的家庭作业。8. bringto把.带到来/ bringfrom从带来please bring your english books to school.请把英语书带到学校来。i bring some bread from home.我从家带来了一些面包。9. practice 用法pfactice+名词 i must practice the guitar every day.我每天 ,必须练习吉他。practice+动名词(v-ing) she practices playing the pianoafter dinner.她晚餐后练习弹钢琴。10. help 用法hdp sb wi

12、th sth/v-ingi must help my mom withhousework.我必须帮助我妈妈做家务。can you help me with washing the dishes?你能帮助我清洗餐具吗？help sb (to) do sth i need to help my students learn english.我需要帮助我的学生学习英语。11. too many> too muclb much to 用法辨析 t?omany+可数名词复数，表示“太多” too much+不可数名词，表示“太多” much too+形容词/副词，表示“太"there a

13、re too many rules at school.学校有太多规贝！|。他吃了太多冰激凌。he eats too much ice-creamhis t-shirt is much too large.他的衬衫太大了。12.正反义词小结interesting, fun有趣的boring 无 聊的noisy吵闹的（noise 噪音， 不可数名词）quiet安静的unimportantimportanthappy高兴的unhappy 不高不重要的重要的兴的sad伤心 的clean干净的dirty脏的big大的small小的long长的short 短 的tall高的short矮的new新的old

14、老的， 旧的fat胖的thiny slim 瘦的outside 在外 面inside 在 里面friendly友好的unfriendly 不 友好的13. strict 用法be strict with sb对某人要求严格 be strict in sth对某事要求严格my father is very strict with me.我的父亲对我要求很f th ohis mother is strict with every thing .他的妈妈对所有事情都很严格。14. remember, forget 用法rf member to do sth记得要做某事（事情还未做）please re

15、member to finish yourhome work.请记得做你们的家庭作业。remember doing sth记得做过某事（事情已做）i remember cleaning my room我记得至!j 扫过我的房间了。fdrget to do sth忘记要做某事（事情还未做）i forget to bring your books to school.我忘记带你的书到学校了。forget doing sth忘记做过某事（事情已做）i forget doing the dishes.我忘记清洗过餐具to15. look, see, watch 和 read 用法辨析igk强调看的动作

16、look at看，look for寻找，look after 顾see强调看的结果，看见watch观看，注视，尤其是动态的画面read读，阅读，常和book, magazine搭配i am looking for you.我正在寻找你。please look after my pet dog on weekends.请在周末照顾我的宠物狗。i can see you.我能看见你。we want to watch the basketball game on saturday.我们想在星期六观看篮球比赛。i must read a book before i go to bed.在我上床睡觉之前

17、, 我必须看一本书。16.句型a) what do you think of?=how do you like?你认为怎么样？what do you think of this artic!e?=how do you like thisarticle?你认为这篇文字怎么样?what does she think of yueyang?=how does she likeyueyang?她认为岳阳怎么样？b)感叹句一般是用来表示说话时的喜悦、惊讶等情感。英语感叹句常用“ what”和“ how”引导,"what"和"how”与所修饰的词置于句首，其它部分用陈述句语序

18、。由“ what”引导的感叹句:“what“意为“多么”用作定语，修饰名词(被强调部分)，单数可数名词前要加不 定冠词a/an,复数可数名词或不可数名词前不用冠词。结构：what+(a/an)+adj.+ii.+主语+谓语+(lt is). what a clever girl she is!多么聪明的姑娘呀！ what an interesting story it is!多么有趣的故事呀! what good children they are!他们是多么好的孩子 呀！!多么漂亮的花呀! what beautiful flowers they are what delicious food it is!多么有味的食物呀! what heavy snowit is!多么大的雪呀!由“how”引导的感叹句：“how“意为"多么”，用作状语，修饰形容词或副词(被强调部分)。如果修饰形容词，则句中的谓语动词用系动词；如果how修饰副词,则句中的谓语动词用行为动词o 结构：how+adj. (advj +