英语翻译1、他们的帮助对我是一个很大的鼓舞2、那位先生能流利地说三种语言3、我们不可能按时把这项工作完成4、积极参加在班

Their help is a great encouragement to me
That gentleman can speak three languages fluently.
We can't finish the work on time
It is very important to actively participate in the discussions held in the classroom
The meeting will last two hours.

Their help was a great inspiration for me.
That sir can speak three languages fluently.
We cannot finish the work on time.
It's very important to take part in the discussion in class actively,
The meeting will last for two hours.