人教版英语八年级下册全书语法知识点汇总!
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八年级下册全部语法汇总
重点语法
一般将来时态的应用
do/does 的一般将来时态形式:(shall/will) do
do/does 的一般将来时态的被动语态:(shall/will) be done
一般将来时态的肯定句、否定句、疑问句形式:
肯定句例句:People will have robots in a few years.
否定句例句:People (will not/won't) have robots in a few years. 一般疑问句例句:Will people have robots in a few years?
特殊疑问句例句:What will people have in a few years?
过去将来时
一、过去将来时的结构
should/would+动词原形
do/does 的过去将来时态形式:(should/would) do
do/does的过去将来时态的被动语态:(should/would) be done
过去将来时态的肯定句、否定句、疑问句形式:
肯定句例句:You should write a letter to him.
否定句例句:You shouldn't write a letter to him.
一般疑问句例句:Should I write a letter to him?
特殊疑问句例句:What should I do?
过去进行时
do/does 的过去进行时态形式:(was/were) doing
do/does 的过去进行时态的被动语态:(was/were) being done
过去将来时态的肯定句、否定句和疑问句形式:
肯定句例句:I was walking down the street when a UFO landed.
否定句例句:I wasn't walking down the street when a UFO landed.
一般疑问句例句:Were you walking down the street when a UFO landed?
特殊疑问句例句:What were you doing when a UFO landed?
动词when 和while 的选择:when 后加瞬间动词,while 后加延续性动词。例句:The boy was walking down the street when the UFO landed.
=While the boy was walking down the street, the UFO landed.
宾语从句
结构:主语+ 谓语动词+ 宾语从句(主语+ 谓语动词+ 宾语/表语)
1、引导名词性从句的连接词
(1)that:没有含义,在宾语从句中不做成分
(2)whether/if:表示是否,宾语从句中不做成分。
I don't know if /whether he still lives here after so many years. 我不知道这么多年后,他是否还住在这里。
(3)连接代词:what, which, who, whom, whose(在宾语从句中做主、宾、表和定语)
连接副词:where, when, how, why(在宾语从句中做状语)
2、在做宾语从句的题目时应注意时态
(1)当主句是现在时态时,宾语从句可以根据需要使用任何时态。
He tells me that his sister came back yesterday.他告诉我他姐姐昨天回来了。
(2)当主句是过去时态时,宾语从句必须是一种过去的时态。
She asked me if I knew whose pen it was.她问我是否知道这是谁的钢笔。
(3)当表示客观事实或普遍真理的句子做宾语从句时,任何时候都用一般现在时。
The teacher said that the earth goes round the sun.老师说过地球绕着太阳转。
if 引导的条件状语从句
结构:主句+ if + 条件状语从句
if + 条件状语从句+ [(comma)] + 主句
注意:
在if 引导的条件状语从句中,主句应用将来时态,状语从句用一般现在时态。例句:You'll have a great time if you go to the party.
=If you go to the party, you'll have a great time.
现在完成进行时态
do/does 的现在完成进行时态形式:have/has been doing
do/does 的现在完成进行时态的被动语态:have/has been being done
现在完成进行时态所应用的场合:
①某事从过去发生一直持续到现在都在做
②过去发生的动作对现在造成影响
I have been making progress since he talked with me that time.自从那次他与我谈过心后,我天天都在进步。
现在完成进行时态的肯定句、否定句和疑问句形式:
肯定句例句:I have been skating for five hours.
否定句例句:I haven't been skating for five hours.
一般疑问句例句:Have you been skating for five hours?
特殊疑问句例句:How long have you been skating?
现在完成时
一、现在完成时的结构
主语+ have/has + 过去分词+ 其他.(当主语是第三人称单数时用has,其余人称用have.)
否定式:主语+ haven't/hasn't + 过去分词+ 其他.
疑问式: Have /Has + 主语+ 过去分词+ 其他?