have + been +現(xiàn)在分詞,構(gòu)成完成進行時。例如:
I have been studying English for ten years. 我一直在學(xué)英語,已達十年之久。
have +been +過去分詞,構(gòu)成完成式被動語態(tài)。例如:
English has been taught in China for many years. 中國教英語已經(jīng)多年。
do 的`用法
構(gòu)成一般疑問句。例如:
Do you want to pass the CET? 你想通過大學(xué)英語測試嗎?
Did you study German? 你們學(xué)過德語嗎?
do + not 構(gòu)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(xué)習(xí)。
n the past, many students did not know the importance of English.
過去,好多學(xué)生不知道英語的重要性。