1、You'll be able to use the present perfect tense for checking up.
你可以用現(xiàn)在進(jìn)行時(shí)態(tài)去檢查。

2、Fill in the blanks with the present perfect tense of the verbs in brackets.
用括號(hào)里動(dòng)詞的現(xiàn)在完成時(shí)態(tài)來(lái)填充空格。

3、It is not easy to learn to use the present perfect tense correctly.
學(xué)習(xí)正確使用現(xiàn)在完成時(shí)不是容易的事。

4、We use the present perfect tense to tell how many times an action has happened till now.
我們用一般過(guò)去時(shí)談?wù)?/a>發(fā)生在過(guò)去的動(dòng)作和事情。

5、The present perfect tense emphasizes the effect of the past action on the present.
現(xiàn)在完成式強(qiáng)調(diào)過(guò)去所發(fā)生的事情對(duì)現(xiàn)在的影響。