四六级

　　语法与词汇是英语学习的基础，坚实的语法是英语水平进阶的充分必要条件，英语六级考试中的各种题型都要求我们掌握一定的语法知识，比如解读长难句，句子中的单词都认识，但是却不明白句子的含义，这个时候，你就应该意识到，你差的不是词汇量，而是语法知识。本文为大家介绍用于现在完成时的句型。

　　英语六级语法知识：用于现在完成时的句型

　　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.

　　这是我看过的最好的电影。

　　This is the first time (that) I've heard him sing.　这是我第一次听他唱歌。

　　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.

　　以上就是小编为大家介绍的相关信息，希望对大家有帮助。想了解更多四六级备考课程、备考资讯，请点击文都网校四六级资讯站查询!有问题找文都☞☞☞详情咨询入口>>>

     编辑推荐