every week (day, year, month…),
once a week,
on Sundays, etc.
She goes to school by bike. She does not go to school by bike. Does she go to school by bike?
the day before yesterday,
last week(year, night, month…),
at the age of 5,
long long ago,
once upon a time, etc.
I finished my homework yesterday. I did not finish my homework yesterday. Did you finish your homework yesterday?
next day(week, month, year…),
in a few minutes,
the day after tomorrow, etc.
am/is/are/going to + do
will/shall + do
be动词 + not
will/shall + not
I am going to go fishing tomorrow. I will go fishing tomorrow. I am not going to go fishing tomorrow. I won't go fishing tomorrow. Are you going to go fishing tomorrow? Will you go fishing womorrow?
at this time,
these days, etc.
He is playing computer game. He isn't playing computer game. Is he playing computer game?
at this time yesterday,
at that time或以
was/were + not + doing
I was watching TV at 7:00a.m. yesterday. I was not watching TV at 7:00a.m. yesterday. Were you watching TV at 7:00a.m. yesterday?
in the past few years, etc.
have/has + done
have/has + not +done
I have been to Beijing three times. I have not been to Beijing. Have you been to Beijing?
by the end of last year(term, month…),etc.
had + done
had + not + done
I had already finished my homework when I watched the TV. I had not finished my homework yet when I watched the TV. Had you finished your homeword when you watched the TV?
the next day(morning, year…),
the following month(week…),etc.
was/were + going to + do
would/should + do
was/were + not + going to + do
would/should + not + do
He said he would help me. He said he would not help me. I didn't konw whether he would help me.
- 瞬间动词用于“一段时间+ ago”的一般过去时的句型中
It is + 一段时间+ since + 一般过去时的句型中，表示“自从……以来有……时间”的意思，主句一般用
It has been
Some time has passed since + 一般过去时的句型中。
He joined the League two years ago. He has been in the League for two years. It is two years since he joined the League. Two years has passed since he joined the League.
Peter is at work, but Mike is at play. Peter is working, but Mike is playing.
I am coming, Mum!意为“我就来，妈妈!”。
The train is leaving soon. The train will leave soon.
be going to+动词原形与
be going to+动词原形表示打算、计划要做的事；将来时
We are going to visit the Great Wall next Sunday. We shall visit theGreat Wall next Sunday。