do和have的區別和用法

have + been +現在分詞，構成完成進行時。例如：

I have been studying English for ten years. 我一直在學英語，已達十年之久。

have +been +過去分詞，構成完成式被動語態。例如：

English has been taught in China for many years. 中國教英語已經多年。

do 的`用法

構成一般疑問句。例如：

Do you want to pass the CET? 你想通過大學英語測試嗎？

Did you study German? 你們學過德語嗎？

do + not 構成否定句。例如：

I do not want to be criticized.  我不想挨批評。

He doesn't like to study.  他不想學習。

n the past, many students did not know the importance of English.

過去，好多學生不知道英語的重要性。