20171026
686. If it had been fine, we would have gone to the park.
如果天气好的话,我们就去公园了。
687. Would he have seen you if you hadn't waved to him?
如果你没有朝他挥手,他能看见你吗?
688. You should have studied much harder. 你本应该更努力的学习。
689. I had thought about arguing with the teacher about that, but I didn't have enough courage.
我本想和老师争论那个问题,但我没有足够的勇气。
690. I had thought about living with my grandparents when my parents went abroad last year.
当我的父母去年出国的时候,我本想和我的祖父母住在一起。