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. http://yingyu.chazidian.com 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.