英语翻译是关于现在完成进行时和现在完成时的翻译句子1.在如此热的天气里,我在校门口已经等了你三个小时了.2.自从上高中以

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英语翻译
是关于现在完成进行时和现在完成时的翻译句子
1.在如此热的天气里,我在校门口已经等了你三个小时了.
2.自从上高中以来,我一直日以继夜地努力学习.
3.这位老教授去过美国多少次了啊?
4.你独自一个人生活在这个小镇上多久了?
5.至今为止,他们已经很好地掌握了许多学习技巧.（so far）
6.这是我们第一次经历如此严重的失败.（this is the first time that）

1.I have been waiting for you at the school gate for 3 hours in such a hot day.
2.I have been studying day and night since I was admitted to this senior high school.
3.How many times has this old professor been to America?
4.How long have you been living alone in this small town?
5.They have mastered many techniques for studying well so far.
6.This is the first time that I have undergone such a serious failure.
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