七年級英語下冊Unit4 Dont eat in class單元知識點匯總

1、Unit 4 Dont eat in class.1. 祈使句的構(gòu)成和用法概念：祈使句是用來表示請求、命令、叮囑、邀請、勸告等的句子。結(jié)構(gòu)：祈使句一般以動詞原形開頭，句末用句號或感嘆號。a) Do型祈使句肯定結(jié)構(gòu)：動詞原形+賓語+其它否定結(jié)構(gòu)：Dont+動詞原形+賓語Open the door.開門Dont play soccer in the classroom.不要在教室里踢足球。b) Be型祈使句肯定結(jié)構(gòu)：Be+表語否定結(jié)構(gòu)：Dont+be+表語Be careful next time!下次要細心！Dont be late for school.上學不要遲到。c) Let型祈使句肯定結(jié)構(gòu)

2、：Let+賓語+動詞原形+其它否定結(jié)構(gòu)：Dont+let+賓語+動詞原形+其它 Lets not+動詞原形+其它Lets go home.我們回家吧。Dont let him go shopping.不要讓他去購物。d) No型祈使句結(jié)構(gòu)：No+動詞ing 或 No+名詞。這種結(jié)構(gòu)的祈使句一般用來表示禁止。No talking禁止講話（=Dont talk=Stop talking）No photos禁止拍照（=Dont take photos）2. 短語go out外出（娛樂） You cant go out on school nights.在上學的晚上你不能出去（玩）。take out掏

3、出，取出 Please take out a piece of paper.請拿出一張紙。do the dishes=wash the dishes清洗餐具 Please wash the dishes after dinner.晚飯后請清洗餐具。think about sth考慮 Lets think about the fruit and vegetables.讓我們考慮一下水果和蔬菜。have fun=have a good time玩得高興 Have fun.玩得開心！ good luck(to sb)祝（某人）好運 Wish you good luck.=Good luck to y

4、ou.祝你好運。sb be lucky某人運氣好 She is lucky.她運氣好。wait for sb等待某人 I am waiting for you.我一直在等你。 arrive late for=be late for為而遲到 Dont arrive late for work.上班不要遲到。fight with sb和某人大家 Dont fight with your classmates. 不要和你的同學打架。make friends交朋友 I want to make friends with you.我想和你交朋友。make sure確信 Please make sure

5、he is at home.請確認他在家。make ones bed鋪床 Every morning I must make my bed.每天早上我必須鋪床。make noise制造噪音 Dont make noise.不要制造噪音。keep quiet=be quiet保持安靜 Keep quiet, please.請保持安靜。=Please keep quiet.keep healthy保持健康 Running can keep us healthy.跑步能保持我們健康。keep cool保持冷靜 Keep cool, dont fight with him.保持冷靜，不要和他打架。ke

6、ep up with跟上 You must keep up with other students.你必須跟上其他學生。3. rule規(guī)則(復數(shù)形式rules)family rules家規(guī)school rules校規(guī)follow the rules=obey the rules遵守規(guī)則break the rules違反規(guī)則make rules制定規(guī)則4. “到達”的用法表達get to+地方arrive in+大地方arrive at+小地方reach+地方get to school = reach school = arrive at school到達學校注意：home, there, he

7、re是副詞，因此介詞to、in、at要省略，如get home到家5. listen to、hear和sound辨析：兩者都表示“聽”的意思listen 有意識地聽，但不一定聽到什么，強調(diào)“聽”這個動作，結(jié)構(gòu)“l(fā)isten+to+賓語”hear強調(diào)聽的結(jié)果，“聽見”。sound聽起來，系動詞+adj做表語He cant hear you because he is listening to music now.他聽不見你，因為他正在聽音樂。That sounds interesting.那聽起來有趣。 6. time及相關短語表時間，不可數(shù)名詞 What time is it now?現(xiàn)在是什

8、么時間？（幾點了？）time 表次數(shù)，可數(shù)名詞 three times三次at the same time同時in time及時on time 準時all the time一直，總是=alwaysfor the first time第一次at times有時，偶爾in the morning/in the afternoon/in the evening在早上/在下午/在晚上at noon=in the middle of the day在中午at night泛指在晚上on school days在上學的白天on school nights在上學的晚上7. wear、put on和get dr

9、essed辨析wear表“穿著、戴著”的狀態(tài)。 She is wearing a red dress today.她今天穿著一件紅裙子。put on表“穿上、戴上”的動作 Please put on your coat. It is very cold outside.請穿上你的外套，外面很冷。get dressed 是 get +adj 的用法，dressed是一個過去分詞充當形容詞，意思是“穿好衣服的”=dress oneself8. have to和must辨析have to +動詞原形，強調(diào)客觀需要；否定形式dont have to不必must+動詞原形，強調(diào)主觀看法Because i

10、t is raining outside, I have to take an umbrella.因為外面正在下雨，我不得不帶傘。You dont have to get up so early.你不必這么早起床。I must finish my homework before half past eight in the evening.我必須在晚上八點半之前完成我的家庭作業(yè)。9. bringto把帶到來bringfrom從帶來Please bring your English books to school.請把英語書帶到學校來。I bring some bread from home.我

11、從家?guī)砹艘恍┟姘?0. practice用法practice+名詞 I must practice the guitar every day.我每天必須練習吉他。practice+動名詞（V-ing）She practices playing the piano after dinner.她晚餐后練習彈鋼琴。11. help用法help sb with sth/V-ing I must help my mom with housework.我必須幫助我媽媽做家務。 Can you help me with washing the dishes?你能幫助我清洗餐具嗎？help sb (to)

12、 do sth I need to help my students learn English.我需要幫助我的學生學習英語。12. too many，too much，much to用法辨析too many+可數(shù)名詞復數(shù)，表示“太多”too much+不可數(shù)名詞，表示“太多”much too+形容詞/副詞，表示“太”There are too many rules at school.學校有太多規(guī)則。He eats too much ice-cream他吃了太多冰激凌。His T-shirt is much too large.他的襯衫太大了。13. 正反義詞小結(jié)interesting, f

13、un有趣的boring無聊的noisy吵鬧的（noise噪音，不可數(shù)名詞）quiet安靜的unimportant不重要的important重要的happy高興的unhappy不高興的sad傷心的clean干凈的dirty臟的big大的small小的long長的short短的tall高的short矮的new新的old老的，舊的fat胖的thin，slim瘦的outside在外面inside在里面friendly友好的unfriendly不友好的14. strict用法be strict with sb對某人要求嚴格be strict in sth對某事要求嚴格My father is very

14、strict with me.我的父親對我要求很嚴格。His mother is strict with everything.他的媽媽對所有事情都很嚴格。15. remember，forget用法 remember to do sth記得要做某事（事情還未做）Please remember to finish your homework.請記得做你們的家庭作業(yè)。remember doing sth記得做過某事（事情已做） I remember cleaning my room.我記得到掃過我的房間了。forget to do sth忘記要做某事（事情還未做） I forget to brin

15、g your books to school.我忘記帶你的書到學校了。forget doing sth忘記做過某事（事情已做） I forget doing the dishes.我忘記清洗過餐具了。16. look，see，watch和read用法辨析look強調(diào)看的動作 look at看，look for尋找，look after照顧see強調(diào)看的結(jié)果，看見watch觀看，注視，尤其是動態(tài)的畫面read讀，閱讀，常和book，magazine搭配Please look at the blackboard請看黑板。 I am looking for you.我正在尋找你。Please loo

16、k after my pet dog on weekends.請在周末照顧我的寵物狗。I can see you.我能看見你。We want to watch the basketball game on Saturday.我們想在星期六觀看籃球比賽。I must read a book before I go to bed.在我上床睡覺之前，我必須看一本書。17. 句型 a) What do you think of?=How do you like?你認為怎么樣？What do you think of this article?=How do you like this article?

17、你認為這篇文字怎么樣？What does she think of Yueyang?=How does she like Yueyang?她認為岳陽怎么樣？b) 感嘆句一般是用來表示說話時的喜悅、驚訝等情感。英語感嘆句常用"what"和"how"引導，"what"和"how"與所修飾的詞置于句首，其它部分用陳述句語序。 一、 由"what"引導的感嘆句："what"意為"多么"用作定語，修飾名詞（被強調(diào)部分），單數(shù)可數(shù)名詞前要加不定冠詞a/an,復數(shù)可數(shù)名

18、詞或不可數(shù)名詞前不用冠詞。結(jié)構(gòu)： what+(a/an)+adj.+n.+主語+謂語+(it is). What a clever girl she is! 多么聰明的姑娘呀！ What an interesting story it is! 多么有趣的故事呀！ What good children they are! 他們是多么好的孩子呀！ What beautiful flowers they are! 多么漂亮的花呀！ What delicious food it is! 多么有味的食物呀！ What heavy snow it is! 多么大的雪呀！ 二、 由"how"引導的感嘆句："how"意為"多么"，用作狀語，修飾形容詞或副詞（被強調(diào)部分）。如果修飾形容詞，則句中的謂語動詞用系動詞；如果how修飾副詞，則句中的謂語動詞用行為動詞。結(jié)構(gòu)： How+adj.（adv.）+主語+謂語+(it is). How cold it is toda