1. It was cloudy yesterday.
    昨天是阴天。

2. I saw him disobeyhis mother yesterday,so I forced him to read a book about filial piety.
    我昨天看到他不顺从他的母亲,所以强迫他读一本有关孝道的书.

3. I saw him disobeyhis mother yesterday,so I forced him to read a book about filial piety.
    我昨天看到他不顺从他的母亲,所以强迫他读一本有关孝道的书.

4. I went to the zoo yesterday.
    昨天我去动物园了.

5. I went to the hospital yesterday.
    昨天他去了医院.

6. I gave him fifty pence yesterday and advised him to save it.
    昨天，我给了他50便士让存起来，

7. I had a letter from my sister yesterday.
    昨天我收到了姐姐的一封信，