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八年级上册英语重点语法,精炼一些

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八年级上册英语重点语法,精炼一些
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答案和解析
1.人称代词
主格:I we you she he it they
宾格:me us you her him it them
形容词性物主代词:my our your her his its their
名词性物主代词:mine ours yours hers his its theirs
2.形容词和副词的比较级
(1) 一般在形容词或副词后+er
older taller longer stronger,etc
(2) 多音节词前+more
more interesting,etc.
(3) 双写最后一个字母,再+er
bigger fatter,etc.
(4) 把y变i,再+er
heavier,earlier
(5) 不规则变化:
well-better,much/many-more,etc.
3.可数词的复数形式
Most nouns + s a book –books
Nouns ending in a consonant +y - y+ ies a story—stories
Nouns ending in s,sh,ch or x + es a glass—glasses a watch-watches
Nouns ending in o +s or +es a piano—pianos a mango—mangoes
Nouns ending in f or fe - f or fe +ves a knife –knives a shelf-shelves
4.不可数名词(单复数形式不变)
bread,rice,water ,juice etc.
5.缩略形式
I’m = I am you’re = you are she’s = she is he’s = he is
it’s = it is who’s =who is can’t =can not isn’t=is not etc
6.a/an
a book,a peach
an egg an hour
7.Preposition:
on,in ,in front of,between,next to,near,beside,at,behind.
表示时间:at six o’clock,at Christmas,at breakfast
on Monday on 15th July On National Day
in the evening in December in winter
8.基数词和序数词
one – first two-second twenty-twentieth
9.Some /any
I have some toys in my bedroom.
Do you have any brothers or sisters?
10.be 动词
(1) Basic form:am/are/is
(2) 肯定和否定句 I am(not) from London.
My eyes are(not) small.
My hair is(not) long.
(3)一般疑问句:Am I a Chniese?Yes,you are.No,you aren’t.
Are they American?Yes,they are.No,they aren’t.
Is the cat fat?Yes,it is.No,it isn’t.
11.there be 结构
肯定句:There is a …
There are …
一般疑问句:Is there Yes,there is./ No,there isn’t.
Are there…?Yes,there are./No,there aren’t.
否定句:There isn’t ….There aren’t….
12.祈使句
Sit down please
Don’t sit down,please.
13.现在进行时.通常用“now”.
形式:be + verb +ing
eg:I am(not) doing my homework.
You/We/They are(not) reading.
He/She/It is(not) eating.
动词 —ing 的形式
Most verbs +ing walk—walking
Verbs ending in e -e + ing come—coming
Short verbs ending in a vowel + a consonant run –running swim—swimming
14 一般现在时.通常用 “usually,often,every day,sometimes”.
形式:
肯定句:
I go to school on foot every day.
She goes to school on foot every day
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