选词填空： at a time, a long time ago, a short time ago, for a long time, after a time 1. I’ve know

选词填空： at a time, a long time ago, a short time ago, for a long time, after a time 1. I’ve know

1.for a long time
2.at a time
3.a long time ago
4.a short time ago
5.at a time
6.after a time
7.a long time ago
8.after a time
9.a long time ago
10.a short time ago
个人答案，仅供参考啦^^

1.for a long time 现在完成式，而且since是一个比较明显的标志
2.at a time 他一次只能吃一个蛋糕
3.a long time ago 我模模糊糊的记着曾经在什么地方见过他。因为是模糊记忆，所以时间应该很长了。关键词vaguely
4.a short time ago 关键词just， 我刚刚所以时间较短
5.at a time 一次和五十个棋手下棋
6.after a time 过了会，他……
7.a short time ago 我觉得这个关键是在这是两句话。他刚刚把它放在树下，我差点都忘记了。如果句号在问题前面，那就是应该是他把它放在树下，没多久就差点忘记了。这时应该是after a time.
8.after a time 但是没过多久我听不进去了。过了片刻的意思、
9.a long time ago 我本应该早就把他给你了。其实没给。这里用了虚拟语气。不要当成完成式
10.a short time ago 刚刚出去了。
个人理解，仅供参考。如有雷同，纯属正常现象。呵呵

1. for a long time
2. at a time
3. a long time ago
4. a short time ago
5. at a time
6. After a time
7. After a time
8. after a time
9. a long time ago
10. a short time ago

at a time, a long time ago, a short time ago, for a long time, after a time
1. I’ve known him_for a long time___, since he was little, in fact.
2. He can only eat one cake at a time___.
3. I vaguely remember meeting him somewhere a long time ago____.
4. I just made the decision _a short time ago___.
5. He can play with as many as fifty chess players at a time____.
6. _ a long time ago___, he said he was sorry and that he shouldn’t have been so irritated.
7. He put it under the big tree a short time ago__. He almost forgot it.
8. At first I listened very carefully, but after a time___I stopped listening and started to think about other things.
9. I should have given it to you _a short time ago__, but I kept forgetting.
10. He is not in at the moment. He went out_a short time ago___.
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