第1个回答 2012-02-05
1) Mike learn photography has been more than two months.
2) since from the last Wednesday in southern China under the two rain.
3) The conductor on the train to work for 20 years.
4) Since 1980, the singer sang many wonderful songs in concert.
5) Liu Mei joined the Young Pioneers has done a lot of good.
6) Alice last year to China, it has been more than a dozen letters sent to John.
7) Since she became a doctor, she has saved the lives of more than 20 people.
8) Since my aunt went to Australia, she has collected quite a lot of beautiful stamps.
第2个回答 2012-02-05
Mike has been studying photography for over 2months.
It has rained for 2times in southern China since last Wednesday.
The trainman has been working in the train for 20years.
The singer has sung lots of wonderful songs at the music since 1980.
Since Liumei became a young pioneer, she has done a lot of good things.
More than 10 letters have been posted to John since Alice coming to China last year.
Since becoming a dotor, she has rescured more than 20 person's life.
Since my aunt went to Australia,she has collected quite many beutiful postage stamps.
第3个回答 2012-02-05
Mike has already learned taking photos for more than 2 months.
It has rained twice in southern China since last Wednesday.
The conductor has worked on this train for 20 years.
The singer has sung lots of fantastic songs at concerts since the 1980s.
Liu Mei has done lots of good work since she joined the Chinese Young Pioneers.
Alice has sent more than 10 letters to John since she came to China last year.
She has already saved the lives of over 20 people since she became a doctor.
She has already collected many beautiful stamps since my aunt went to Australia.本回答被提问者采纳