present perfect continuous tense

常見例句

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。
B. Rewrite the following sentences, using the present perfect continuous tense of the verbs in brackets.
重寫以下的句子，竝用括號裡動詞的現(xiàn)在完成進(jìn)行時態(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.
太簡單了。我們想說那種正在進(jìn)行的或者才剛剛停止的動作，就用現(xiàn)在完成進(jìn)行時時態(tài)。