英语时态have done的问题
1.这本书我读过三遍 是i've read the book for 3 times 还是ive read the book 3 times?
2.我三次去那所房子 是i went to the house for 3 times 还是i went to the house 3 times 还是全不对?
3.我等了他一小时 但他没来 是i had waited for an hour,but he didn't come 还是i waited for an hour,but he didn't come 还是两者都对?新概念上说的是后者 但我不明白后者和前者的差别.