- 那个学生昨天丢了书。
That student lost his book yesterday.
- 他昨天到达的。
He arrived yesterday.
- 他昨天参加了我们的讨论。
He joined us in the discussion yesterday.
- 今天不想昨天那么冷/热。
It's not as cold / hot as it was yesterday.
- 她昨天已把树枝修剪过了。
She has lopped branches off yesterday.
- 我昨天才见到他。
I saw him only yesterday.
- 我昨天买了好几本书。
I bought several books yesterday.
- 我昨天丢了钱包。
I lost my wallet yesterday.