第1个回答 2009-11-18
一般现在时
I'm a student.I do my homework every day.I don't like studying.I like to play basketball.I have a pen .
一般过去时
I was a student ten years ago. I didn't do my homework last night.
I started to play basketball when I was seven.
I had a cold last week. She gave me some medicine yesterday.
一般将来时
I will finish my book next week.
He will be a teacher in the future.
They will go to the park tomorrow.
We will have a test tomorrow.
Will you come here next week?
现在完成时
I have finished my book.
Have you seen this movie?
Where have you been?
I have been to Shanghai twice.
He has gone to Guangzhou.
现在进行时
I'm doing my homework now.
What're you doing?
He is playing basketball.
We are talking about something.
She is singing.
过去进行时
He was reading when I came in.
What were you doing yesterday evening?
I was cooking when someone knocked the door.
I was running when I saw the accident.
He was doing his homework when I called up him.
第2个回答 2019-12-12
状语从句是句子的状语由一个从句充当，来修饰主句中的动词，形容词或副词等。状语从句都由从属连词引导，与主句连接，放在句末时，一般不在前面加逗号。
状语从句根据它表示的意思可分为时间，原因，条件，比较，结果，目的等类。下面我们拣重点的一个一个来分析。
时间状语从句：是由when,
as,
while,
after,
before,
since,
until,
as
soon
as
等从属连词引导的状语从句。
时间状语从句中的谓语动词不能用一般将来时，只能用一般现在时表示将来发生的动作或存在的状态。如:i
will
call
you
as
soon
as
i
arrive
there.
原因状语从句：
because,
since,
as和for都表示原因。常常令我们不知该用哪个好。我们来比较一下。
because语势最强，回答why提出的问题，用来说明人所不知的原因。当能够很明显的看出原因或人们已知原因，就用as或since。如：i
don’t
like
that
coat,because
the
color
looks
terrible.
由because引导的从句如果放在句末，且前面有逗号，则可以用for来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。如：he
is
not
here,
because
/
for
his
mother
is
ill.
目的状语从句：表示目的状语的从句可以由in
order
that,
so
that,等词引导。如：you
must
raise
your
voice
so
that/in
order
that
everybody
can
hear
you
clearly.
结果状语从句：结果状语从句常由so...that
或
such...that引导，要掌握和区分这两个句型，首先要了解so和such后面分别跟什么词。such是形容词，修饰名词或名词词组，so是副词,只能修饰形容词或副词。so
还可与表示数量的形容词many,
few,
much,
little连用，形成固定搭配。如：the
box
is
so
heavy
that
i
can’t
carry
it.
让步状语从句：是由though,
although
引导的状语从句。though,
although
和
but不能同时使用。