1、Fill in the blanks with the present perfect tense of the verbs in brackets.
用括號里動詞的現(xiàn)在完成時態(tài)來填充空格。

2、It is not easy to learn to use the present perfect tense correctly.
學習正確使用現(xiàn)在完成時不是容易的事。

3、The Perfect Tense of Verb and Its Visible Meaning of Tungusic Languages
通古斯語的動詞完成時及其可見性意義

4、(linguistics) of or relating to the pat perfect tense of verbs.
（語言學）屬于或關(guān)于動詞的過去完成時態(tài)的。

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

6、The present perfect tense emphasizes the effect of the past action on the present.
現(xiàn)在完成式強調(diào)過去所發(fā)生的事情對現(xiàn)在的影響。

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