常用英语时态时间状语

just, already, yet
just: “Are you hungry?”“No, I have just had lunch”
Hello, have you just arrived?
already: “Don’t forget to pay your electricity bill.”“I have already paid it.”
“What time is Mark leaving?”“He has already left.”
yet: Has it stopped raining yet?
I’ve written the email, but I haven’t sent it yet.
never, ever, now, before:
Have you ever eaten caviar?
What a boring film, it’s the most boring film I have ever seen.
He has never driven a car before.
recently: Have you heard anything from Brian recently?
in the last few days: I’ve met a lot of people in the last few days.
so far: Everything is going well. We haven’t had any problems so far.
since then(1949, last Monday, two o'clock, 从句...,etc.): I’m hungry. I haven’t eaten anything since breakfast. (=from breakfast until now)
for three days(a long time, two hours,...etc.): It’s good to see you again, We haven’t seen each other for a long time.
today, this evening, this week, this term, these days, this year…
today: I’ve drunk four cups of coffee today.
this morning: I haven’t seen Tom this morning. Have you?
this year: Have you had a holiday this year?
this term: Rob hasn’t worked very hard this term.
once, twice, three times:
It’s the first time he has driven a car
Sarah has lost her passport again, it’s the second time this had happened. 7.过去完成时：
by then(1977,yesterday,eight last night,the time we got there,...etc.)
by the end of last term(week,year,month,...etc.)
有些时间状语可用在不同的时态中，各有其意：
now:1)I am speaking English now.
2)We have finished our homework now.
3)He's in the classroom now.
this afternoon:1)We had a class meeting this afternoon.
2)We're going to see a film this afternoon.
today:1)I've got two letters today.
2)We will learn a new lesson today.
3)She's cleaning her room today.
after seven:1)Mary will wash her clothes after seven.
2)Mary washed her clothes after seven.
for a week:1)John stayed in Wuxi for a week.
2)John has stayed in Wuxi for a week.
3)John will stay in Wuxi for a week.
除之外，过去将来时主要用于宾语从句（主句为过去时）；故事;小说中等表过去的打算。