对于大学英语四六级考试来说，语法非常重要。坚实的语法是英语水平进阶的充分必要条件。但现实情况是，不少人对语法学习并没有一个清晰的概念，甚至忽视语法学习。在此小编希望考生们重视起最语法的复习。今天文都四六级网给大家盘点2020年上半年大学英语六级语法：现在完成时句型，希望对您有所帮助。

大学英语六级语法：现在完成时句型

1)It is the first / second time…. that…结构中的从句部分，用现在完成时。

It is the first time that I have visited the city.

It was the third time that the boy had been late.

2)This is the… that…结构，that 从句要用现在完成时.

This is the best film that I've (ever) seen.

这是我看过的的电影。

This is the first time (that) I've heard him sing.　这是我次听他唱歌。

典型例题

(1) ---Do you know our town at all?

---No, this is the first time I ___ here.

A. was　 B. have been　 C. came　 D. am coming

答案B. This is the first time 后面所加从句应为现在完成时，故选B。

(2) ---Have you ____ been to our town before?

---No, it's the first time I ___ here.

A. even, come　 B. even, have come　　C. ever, come　 D. ever, have come

答案D. ever意为曾经或无论何时，反意词为never，此两词常用于完成时。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中，从句要用完成时。

注意：非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。

(错)I have received his letter for a month.

(对)I haven't received his letter for almost a month.

语法的学习过程会觉得条目繁多，很难记，而且枯燥无味，这种情况下，学习应该寻找的是语法的学习方法。掌握方法，在学习过程中才能克服困难。更多四级语法、六级语法请及时关注文都四六级网站。

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