present perfect continuous

基本解釋

A. Fill in the blanks with the present perfect continuous tense of the verbs in brackets.
試用括號裡動詞的現(xiàn)在完成進行時態(tài)填充空格。
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)在完成進行時態(tài)。
Veronica: Alright! So it's easy. Present perfect continuous tense is used when we're talking about things that are still ongoing, or have just stopped.
好了！太簡單了。我們想說那種正在進行的或者才剛剛停止的動作，就用現(xiàn)在完成進行時時態(tài)。