小学四年级 英语语法知识总结
-
一．
助动词，
be
’
动词应用
疑问
肯定
否定
用法
口诀
助动词
Do
Does
do
does
don
’
t
doesn
’
t
在句子中有实际意义的动词出现时
Be
动词
Is
Are
Am
Is
are
am
isn
’
t
aren
’
t
am not
句子中没有实际意义的动词出现
oes
问，
does
答，否定用
doesn
’
t
Do
问，
do
答，否定用
don
’
t
Is
问，
is
答，
否定用
isn
’
t
Are
they
…
?
问，
are
答，
否定用
aren
’
t
Are
you
…
？问，
am
答，
否定用
am not
二．三单用法：
he she it
人名
your father
my friend the water one bear
…
< br>后面动词加
s
或
es
，
有助动词
在助动词上加
e
或
es.
一句话中只有一处变三单
加
es
或
s,
有助动词
does
，则动词不变。
如：
He
doesn
’
t like cows.
What does your mother do?
Does he like cats?
The
cow likes grass.
口诀：
Does
问，
does
答，否定用
doesn
’
t
三．单复数用法：
How much are
the jeans?
They
’
re
…
yuan.
t
hey?
How much is
the
shirt
？
It<
/p>
’
s
…
yuan.
it?
Where are
the dogs?
They
are
…
t
hey?
Where is
the supermarket? the dog?
It
’
s
…
.
i
t? she? he?
四．
any
和
some
用法：
(1) any
和
< br>some
后都要加名词复数：
Do you have any
dress
es
? coats? pajamas?
We
have some skrits.
(2)
any
用在疑问句和否定句，
some
用在肯定句：
Do you have any coats?
Yes, we have some.
No, we
don
’
t have any.
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