Can you make the tea ? 你会沏茶吗? (表示能力)
Do you make the tea ? 你沏茶吗? (表示习惯)
(一) can和could的用法
1.表示能力。例如:
Can you finish this work tonight ?
Man cannot live without air .
2.表示请求和允许。例如:
Can I go now ?
You can have the book when I have finished it
.
3.表示可能性(可以,可能)。例如:
We can call for you at nine .
You can’t sell the cow and drink the milk, as
the saying goes .
4.表示推测某人或某物一时的情况(有时候会……)。例如:
SARS can be very dangerous .非典型肺炎会很危险。
He can be very friendly at times .他有时会很友好。
The road can be blocked .路可能会被堵塞了。
Our house is on the top of the hill, and in
winter the winds can be pretty cold .
5.表示惊异、怀疑、不相信的态度(主要用在否定句、疑问句或感叹句中)。例如:
Can this be true ?
How can you be so careless !
This cannot be done by him .
注意:can的将来时,可用be able
to代替。例如:
I’ll not be
able to come this afternoon .
但当我们要表示“某件事已做成功”时,应用was(were) able
to,不能用could。例如:
He was able to go to the party
yesterday evening and he enjoyed himself very much .
6.could表示客气地提出要求或陈述看法。例如:
Could you come and see next Sunday .
I’m sorry I couldn’t lend you the book now .
7.could也可以表示请求,语气较委婉,主要用于疑问句,不用于肯定句,答语应用can。
例如:
—Could I come to see you tomorrow ?
—Yes, you can .(否定句答语可用:No, I’m afraid not .)
8.注意can的惯用语。
1) cannot but +原形动词,意为:“不得不”。例如:
I cannot but tell
her the truth .
2) Cannot help +动名词,意为:“不得不”。例如:
I cannot help
laughing .
3) Can but +原形动词,意为:“只好;不得不”。例如:
We can but agree
with him .
4) Cannot … too意为:“怎么……也不为过;不嫌太过……”。(参阅形容词和副词)
A man cannot have
too many ties .男人有再多的领带也不为过。
can you make the tea
你会沏茶么?
do you make the tea
你沏茶了么?
当然,你这两句都写得有问题。
Can you是有请求的意思,Do you有命令的意思
有