(完整版)外研社小学英语(一年级起点)四年级下知识点整理
-
英语(四年级下)主要知识点整理
(例句都是课本中原句)
1.
祈使句:表示请求、命令、建议等的句子。祈使句不需要主语,
谓语动词用原形,句子末尾一般用感叹号。
eg: (1) Don’t walk on the grass!
(否定祈使句)
(2)
Let’s make a
newspaper!
(肯定祈使句)
2.
一般现在时:经常发生的动作或状态
(
常与
always,
usually,
often,
sometimes, seldom, never, every
day/week/year, on Sundays
...
连用
)
(1)
be
动词的一般现在时:
(比较简单)
I am, We/You/They are,
He/She/It is
,
There
is+
单数名词或不可数名词
,
There are +
复数名词
eg: It’s not beautiful, but it’s
helpful.
(2)
行为动词
的一般现在时:
(单数第三人称的变化是重点、易错点
;
助动词用
do, don’t, does,
doesn’t
)
eg:
(1)This machine cuts the potatoes.
(2) Does he live in New
York?
(3) Fish live in the
river and birds live in the tree. (***
注
意
fish
单数和
复数写法一样,这里
fish
前面没有
a,
所以是复数形式,后面接谓语
动词要用原形。另外,
Sheep
和
deer
单复数也是一样
的形式
)
3.
一般过去时:
< br>表示过去发生的动作或状态
(常与
...ago,
yesterday, the
day before yesterday,
last week/year/month, once upon a time, one day,
the next day, in
2016...
连用)
1
(1)
be
动词的一般过去时:
I/He/She/It was, We/You/They were,
There was+
单数名词或不可数名词
,
There were +
复数名词
eg
:
Once upon a
time, there was a boy.
(
讲故事常用说法
)
(2)
行为动词的一般过去时:
p>
(
助动词用
did,
didn’t)
①
一般动词变化:
构成法:
1.
动词原形
+ed.
如:
look
--
looked
2.
以
e<
/p>
结尾的词
+d.
如:
< br>live
--
lived
3.
以辅音字母
+y
结尾的词,改
y
为
i,
再加
ed.
<
/p>
如:
study
--
studied, cry
--
cried.
4.
以重读闭音节或
r
音节结尾,
末尾只有一个辅音字母的词,
双写这个辅音字母,
再加
ed.
如
:
clap
--
clapped,
stop
--
stopped,
prefer
--
preferred
①
不规则动词变化:如
had,
said,
put,
saw,
got,
ran,
learnt(
英式写法
),
bought, came, took,
went
等
eg1: The
animals had a concert last week.
eg2: The next day, the boy ran to the
village again.
eg3: What did
he play yesterday?
eg4: When
did you get up last Sunday? I got up at 8
o’clock.
4.
一般将来时:表示还没有发生但将要发生的事情或动作
(
< br>常与
tomorrow,
the
day
after
tomorrow,
next
year/month/week,
soon,
in
the
future, in
... minutes/hours/days...
连用
)
(1)
Be
going
to+
动词原形:多表示即将发生,最近打算、计划、安
2