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.
我們用一般過去時(shí)談?wù)?/a>發(fā)生在過去的動(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)過去所發(fā)生的事情對現(xiàn)在的影響。