* You are not supposed to be working. You haven't quite recovered yet. 你现在不应当工作，你的病还没有完全好哩。
* It's nice of you to be thinking of us. 难为你想着我们。
* It feels wonderful to be working out of doors in such weather. 这样天气在外面劳动很舒服.
* We pretended to be working very hard when he came in． 他进来时我们假装正在努力工作。
* Of course he doesn't like to be lagging behind the others. 他当然不愿意像现在这样落在别人后面。
* I am glad to be working with you. 和你在一道工作我很高兴。
* How fortunate I am to be living here! 生活在这里多么幸福!
* The struggle was known to have been going on for over twenty years. 据悉这个斗争已进行二十多年了。
* They suspected us to have been quarrelling. 他们还疑心我们刚吵过架哩。