1、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。

2、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。

3、The Perfect Tense of Verb and Its Visible Meaning of Tungusic Languages
通古斯語(yǔ)的動(dòng)詞完成時(shí)及其可見性意義

4、(linguistics) of or relating to the pat perfect tense of verbs.
（語(yǔ)言學(xué)）屬于或關(guān)于動(dòng)詞的過(guò)去完成時(shí)態(tài)的。

5、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。

6、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。

7、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。