小题1:Can you hear the children singing in the classroom?

小题2:I have been to Shanghai many times.

小题3:More and more people realize the importance of working hard.

小题4:Jack used to go to work without having breakfast.

小题5:We must take actions to reduce the pollution at once.

小题1:考查固定句型。hear sb. doing sth.“听见某人正在做某事”。故翻译为Can you hear the children singing in the classroom?。

小题2:考查现在完成时。Have been to“去过某地”。故翻译为I have been to Shanghai many times.。

小题3:考查固定搭配。more and more“越来越多的......”；the importance of doing sth.“做某事的重要性”。Work hard“努力学习”。故翻译为More and more people realize the importance of working hard.。

小题4:考查固定句型。used to do sth.“过去常常做某事”。without doing sth.“没有做某事”。故翻译为Jack used to go to work without having breakfast.

小题5:考查固定句型。take actions to do sth.“采取措施做某事”。reduce“减少”。at once“立刻”。故翻译为We must take actions to reduce the pollution at once.。