perfect tense造句

1、Fill in the blanks with the present perfect tense of the verbs in brackets.
用括号里动词的现在完成时态来填充空格。

2、It is not easy to learn to use the present perfect tense correctly.
学习正确使用现在完成时不是容易的事。

3、The Perfect Tense of Verb and Its Visible Meaning of Tungusic Languages
通古斯语的动词完成时及其可见性意义

4、(linguistics) of or relating to the pat perfect tense of verbs.
（语言学）属于或关于动词的过去完成时态的。

5、You'll be able to use the present perfect tense for checking up.
你可以用现在进行时态去检查。

6、The present perfect tense emphasizes the effect of the past action on the present.
现在完成式强调过去所发生的事情对现在的影响。

7、We use the present perfect tense to tell how many times an action has happened till now.
我们用一般过去时谈论发生在过去的动作和事情。