1901
Lesson Nineteen Finished Activities 完成时
I have done sth.
I had done sth.

1902
Lesson Nineteen Finished Activities 完成时
Have you ever been to Britain?
你去过英国吗？

1903
Lesson Nineteen Finished Activities 完成时
I have been to London twice.
我去过英国两次。

once
twice
three times
four times
many times
He has gone to London. 他去了伦敦。
He has been to London. 他去过伦敦。

1904
Lesson Nineteen Finished Activities 完成时
Have you sent the postcard to your uncle?
你把明信片寄给你叔叔了吗？

Christmas card
New Year card
Spring Festival card

1905
Lesson Nineteen Finished Activities 完成时
I told Maggie to send it for me.
我告诉Maggie帮我寄过去了。

1906
Lesson Nineteen Finished Activities 完成时
Haven‘t I told you that the address to the letter might be wrong?
我难道没告诉过你信的地址可能有错吗？

address n. 地址
May I have your address?
address v. 演讲
address the audience = make a speech

1907
Lesson Nineteen Finished Activities 完成时
Peter had thought a lot about quitting before he did it.
Peter辞职前考虑了很久。

1908
Lesson Nineteen Finished Activities 完成时
He had become an Olympic champion by the age of twenty.
他二十岁就已经是世界冠军了。

China is going to host the 2008 Olympic Games.
Beijing is going to host the 2008 Olympic Games.
残奥会 Special Olympic Games
冬奥会 Winter Olympic Games
champion 冠军
championship 锦标赛
runner up 亚军

1909
Lesson Nineteen Finished Activities 完成时
Beijing successfully won the bid for the 2008 Olympic Games.
北京成功获得2008年奥运会的主办权。

Beijing is biding for the...
Guangzhou is biding for the 2010 Asian Games.
Beijing won the bid for the 2008 Olympic Games.

1910
Lesson Nineteen Finished Activities 完成时
It had tried eight years before but failed.
八年前它尝试过，但没有成功。

1911
Lesson Nineteen Finished Activities 完成时
I should have checked it.
我真应该检查一下。

should have done sth. 后悔

1912
Lesson Nineteen Finished Activities 完成时
You might have heard that Dustin was dismissed.
你可能听说了吧，Dustin被开除了。

might have done sth. 推测
You are dismissed. = You are fired. = You are laid off.
You might have heard Jenny was promoted again.

1913
Lesson Nineteen Finished Activities 完成时
You must have gotten the news that the postage is going to be raised.
您一定知道邮资上调的消息了。

must have done 肯定推测
You must have forgotten to lock the door.
postage paid 邮资已付

1914
Lesson Nineteen Finished Activities 完成时
Having successfully concluded their project, Melissa is spending her holiday in Singapore.
Melissa完成了项目，现在正在新加坡度假。

Having won the prize, people went to the bar to celebrate.

1915
Lesson Nineteen Finished Activities 完成时
完成时时间状语
before
before he did it
by
by the age of
by 2000

1916
Lesson Nineteen Finished Activities 完成时
He has been watching TV for two hours.
他已经连着看了两个小时电视了。

before
by
for
I have lived here for 20 years.

1917
Lesson Nineteen Finished Activities 完成时
应用
BEAST: That hurts!
BELLE: If you'd hold still, it wouldn't hurt as much.
BEAST: Well if you hadn't run away, this wouldn't have
happened!
BELLE: Well if you hadn't frightened me, I wouldn't have
run away!
BEAST: Well you shouldn't have been in the West Wing!