46.Since + 主语 + 过去式，主语 + 现在完成式
Since + 主语 + 过去式，主语 + 现在完成式
例如：Since he went to senior high school, he has worked very hard.
自从他上高中，他一直很用功。
例如：Since he went to senior high school, he has worked very hard.
自从他上高中，他一直很用功。
以上内容来自专辑
- 47.It was not until recently that.直到最近才…44000:39
- 46.Since + 主语 + 过去式，主语 + 现在完成式47900:27
- 45.From what is mentioned above, we may…48200:25
- 44.It took him a year to do…37900:33
- 43.To be frank /To tell the truth40600:36
- 42.There is no doubt that + 从句38400:27
- 41.Nothing can prevent us from doing…43500:30
- 40.prefer to do…rather than do…35500:39
- 39. would rather do…than do…37300:33
- 38. Upon / On doing…43500:44
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