第1个回答 2011-04-15
A new life style has been put forward,that is the green life style
At that time he was very busy.
那段时间他很忙。
pron.
那, 那个
What was that which he gave you?
他给你的是什么?
conj.
(用于引出各种从句)
It's the best that you should work hard
第2个回答 2011-04-14
is是系动词，that is 是主语加系动词，前一个问题参考第一个人的 ，翻译得不错
第3个回答 2011-04-14
A new life style has been put forward,that is ,the green life style.
第4个回答 2011-04-14
People put forward a new way of life, that is/at once/namely, the green life. "