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1、八年级英语下册语法知识点讲解和练习（一）一般将来时一般将来时表示将来某个时间要发生的动作或者存在的状态。通常与表示将来的时间状语连用，如tomorrow, the day after tomorrow, next year, next month, next week, in 100 years 等。be going to do （动词原形）结构：表示打算、准备做的事情或者肯定要发生的事情。如：It is going to rain.will do 结构表示将来的用法：1.表示预见Do you think it will rain?You will feel better after a go
2、od rest.2.表示意图I will borrow a book from our school library tomorrow.What will she do tomorrow?基本构成如下：一般疑问句构成：（1）will+主语+do? Will Sarah come to visit me next Sunday?（2）there be 结构的一般疑问句：Will there + be ?Will there be fewer trees? Yes, there will./ No, there wont否定句构成：will + not （wont）+doSarah wont co
3、me to visit me next Sunday.特殊疑问句构成：特殊疑问词will主语？What will Sarah do next Sunday?【练习】根据例句，用will改写下列各句例：I dont feel well today.（be better tomorrow）Ill be better tomorrow.1.Gina has six classes today.（have a lot of homework tonight）_2.Im tired now.（sleep later）_3.My parents need a new car.（buy one soon）_
4、4.We cant leave right now.（leave a little later）_5.The weather is awful today.（be better tomorrow）_【答案】1.Shell have a lot of homework tonight.2.Ill sleep later.3.Theyll buy one soon.4.Well leave a little later.5.Maybe itll be better tomorrow.（二）should的用法：should用来提出建议和忠告，后边加动词原形，否定句直接在should后边加not.例如
5、：I think you should eat less junk food.我认为你应该少吃垃圾食品。She drives a lot and she seldom walks.So I think she should walk a lot.她经常开车，很少走路。所以我认为她应该多走路。Students shouldnt spend too much time playing computer games.学生们不应当花太多的时间玩计算机游戏。学习向别人提建议的几种句式：（1）I think you should（2）Well, you could（3）Maybe you should （
6、4）Why dont you?（5）What about doing sth.?（6）Youd better do sth.【练习】用should或shouldnt填空1.I cant sleep the night before exams.You _ take a warm shower before you go to bed.2.Good friends _ argue each other.3.There is little milk in the glass.We _ buy some.4.They didnt invite you? Maybe you _ be friendli
7、er.5.I am a little bit overweight.So I think I _ do exercises every day.【答案】1.should 2.shouldnt 3.should 4.should 5.should（三）过去进行时过去进行时表示过去某一点时间正在进行的动作或者过去某一段时间内一直进行的动作。1.构成was /were + doing，例如：I was watching TV at 9 oclock last night.at 9 oclock last night是时间点They were playing football all afternoo
8、n.all afternoon是时间段2.过去进行时的标志词at 8 oclock last night, this time yesterday等。例如：I was having lunch at home this time yesterday.昨天的这个时候我正在吃午饭。At that time she was writing a book.那阵子她在写一本书。（表示她在那段时间里一直在做那件事情。）【练习】用括号中所给动词的适当形式填空。1.This time yesterday I _ _（read）books.2.At 9 oclock last Sunday they _ _（h
9、ave）a party.3.When I _（come）into the classroom, she _ _（read）a storybook.4.She _ _（play）computer games while her mother _ _（cook）yesterday afternoon.5.I _ _（have）a shower when you _（call）me yesterday.【答案】1.was reading 2.were having 3.came; was reading4.was playing; was cooking 5.was having; called（四
10、）间接引语形成步骤：（1）不要逗号，冒号，引号（2）要考虑到人称的变化（人称的变化与汉语是一致的）（3）要考虑时态的变化（4）要考虑时间状语、地点状语和语示代词的变化。1.直接引语变成间接引语时，几个主要时态的变化规律直接引语间接引语一般现在时一般过去时一般将来时过去将来时现在进行时过去进行时2.直接引语变成间接引语时，一些词汇的变化规律直接引语1.am / is2.are3.have / has4.will5.can6.may间接引语1.was2.were3.had4.would5.could6.might【练习】用括号中所给动词的适当形式填空。1.She said I _（be）hard-
11、working.2.Peter told me he _（be）bored yesterday.3.She said she _（go）swimming last Sunday.4.Bobby said he _（may）call me later.5.Antonio told me he _（read）a book then.【答案】1.was 2.was 3.went 4.might 5.was reading请转述他人说的话：1.I go to the beach every Saturday.（Tom）2.I can speak three languages.（Lucy）3.I wi
12、ll call you tomorrow.（Mike）4.Im having a surprise party for Lana.（she）（五）if引导的条件状语从句结构：if一般现在时，主语将来时含义：如果，将要例如：If you ask him, he will help you.如果你请求他，他会帮助你。If need be, well work all night.如果需要，我们就干个通宵。【练习】根据中文提示，完成句子。1.如果你参加聚会，你将会过得很开心。If you _ the party, you _.2.如果明天下雨，我们将不去野餐。If it _ tomorrow, we _.3.如果你经常听英文歌，你将会喜欢英语的。If you often _, you _.【答案】1.If you go to the party, you will have a good time2.If it rains tomorrow, we wont go to the picnic3.If you often listen to English songs, youll like English4