外研社小学英语一起小学四年级下语法总结及练习题
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外研社英语一起四年级上语法总结及练习题
祈使句
表达说话人对对方的叮嘱、劝
告、请求或命令等
,
往往有表示请求、命令、希望、禁止、劝告
等意思
.
祈使句一般没有主语
,
p>
实际上是省略了主语
“You”.
句末用感
叹号或句号
,
用降调朗读
.
肯定结构都以动词原形开
头
.
祈使句的肯定句式有三种形式
p>
,
即
1)Do
型(以行为动词原形开头)
,
例如:
Sit down
坐下
!
Stand up
起立
!
2)Be
型(以
be
开头)
,
例如:
Be quiet
!
安静
!
3)Let
型
(以
let
开头)
,
例如:
Let me help you.
祈使句的否定结构是以
“Don’t
+动词原
形
”
开头
.
例
如:
Don’t go
there,please
.
请别去那儿
.
Don’t be
late
.
不要迟到
用括号内所给动词的适当形式填空。
1. __________ (not, be) late.
2.
____________ (dust) the dressing table.
3.
____________ (not, speak) with your mouth full of
food.
4. ____________ (not,
talk) and ____________ (read) a book.
5. ____________ (not, drop)
the nice vase, Sam.
6. ____________ (look) out! A car is
coming.
7. ____________ (give) us ten years and
just see what our country will be like.
8. ____________
(not, let) the baby cry.
9. ____________ (open) the
window and ____________ (shut) the door.
10. Let’s
____________ (sweep) the floor.
根据要求改写句子
1. Will you please read it again more
slowly?
(改为祈使句)
__________ __________ again more
slowly, please.
2. Please sit next to
Nancy.
(改为否定句)
__________ __________ next to Nancy.
3.
Come to my house tomorrow.
(改为否定句)
__________ come to my house tomorrow.
4. Wear the glasses!
(改为否定句)
___________ wear the glasses!
5. Don’t wash
your hands! (
改成肯定句
)