Today, we are going to talk about the present perfect continuous tense. 今天，我們談?wù)勈颤N是現(xiàn)在完成進(jìn)行時(shí)。
B. Rewrite the following sentences, using the present perfect continuous tense of the verbs in brackets. 重寫以下的句子，竝用括號(hào)裡動(dòng)詞的現(xiàn)在完成進(jìn)行時(shí)態(tài)。
The second function of the present perfect continuous tense is to talk about an action that started in the past and it is still happening. 太簡(jiǎn)單了。 我們想說(shuō)那種正在進(jìn)行的或者才剛剛停止的動(dòng)作，就用現(xiàn)在完成進(jìn)行時(shí)時(shí)態(tài)。