Question

when he ___the door, he found his keys were nowhere. 1 would open 2 was to open

选择哪一个，及分别说出分别为什么对与错

Answer 1

这题选第二个 be to do 正准备做某事
第一项 would open 是将会去做，有之后肯定会发生（换句话说现在看起来已经发生了）的意味在里面

Answer 2

2
翻译：

2 was to open the door --------正要开门时

would open--------将来的任何时间去开门

Answer 3

when he ___the door, he found his keys were nowhere. 1 would open 2 was to open
选项是2.
1.will do sth.单纯表将来。
2.be to do.表一个动作即将发生，往往还有be about to do的意思。

Answer 4

选2
打开门同发现钥匙是同时性的动作，时态要保持一致。
希望能够帮到你。

Answer 5

选第二个，be to do sth. 表示正要干嘛，而would do 侧重于将要做某事