Unit 3
Could you please clean your room?
2.
情态动词
could
表示委婉地请求许可。
Could I...?
意为
“
我可以
……
吗
?”,
表示请求对方允许自己做某事。
肯定回答为
“Yes,you can./Sure./Of course.”
。
否定回答为
“Sorry./I
’
m afraid not./I
’
m sorry you can
’
t.”
。例如
:
—Could I use your computer?
我能用一下你的电脑吗
?
—Sorry.I
’
m working on it.
对不起。我正在用。
3.
情态动词
could
作为
can
的过去式时
,
不表示委婉语气
,
而表示过去的能力或可能性
,
对其一般疑问句的回答仍可用
could
。例如
:
The boy could read when he was five years old.
这个男孩
5
岁时就能看书了。
(
D
)4.—Could I go out with Jack tonight?
—
.You have to stay home.
A.Yes,you could B.Yes,you can
C.Sorry,you can D.No,you can
’
t
(
C
)5.—Could I invite my friends to the party on Saturday,Mom?
—Of course you
.That sounds like fun.
A.may B.could C.can D.must
Ⅱ
.
用
can
或
could
的适当形式填空
,
每空一词
1.He is sad he
can
’
t
run any more because of his illness.
2.—Could he wash his clothes by himself when he was young?
—Yes,he
could
.
3.The little girl
couldn
’
t
walk when she was two years old.
4.—Could I ask you some questions?
—Yes,you
can
.
Ⅲ
.
根据汉语意思完成句子
,
每空一词
1.
你能把电视关上吗
?
Could
you please
turn
off
the TV?
2.
我今晚可以在外面待到
9
点吗
?
Could
I
stay
out
until 9:00 tonight?
3.——
我今晚能出去和朋友散步吗
?
——
当然
,
那应该没问题。
—
Could
I
go
out for a walk with my friends this evening?
—
Sure
,that
should
be OK.
4.——
你能把书递给我吗
?
——
当然。
—Could you
pass
me the book?
—Yes,
sure
.
5.——
我可以借你的电脑吗
?
——
对不起。我不能把电脑借给你。
—Could I
borrow
your computer?
—Sorry.I
can
’
t
lend
it to you.