初三英语问题(请说明理由)

1. We were showed a picture of the feathered dinosaur by Miss Li.
李小姐给我们看照片，改成被动即为我们被给了张照片来看，we were showed，因为原句是过去时，所以用were，show的被动形式是showed.

2. The trees should be watered often after they are planted.
你应该浇树，改为被动，树应该被浇；在你种了树之后，改为被动，在树被种之后。

3. I'm reading a book which is about Bill Gates.
which代指the book，构成定语从句

1.Miss Li showed us a picture of the feathered dinosaur.(被动语态）
＿We＿＿ ＿were＿＿ ＿showed＿＿a picture of the feathered dinosaur by Miss Li.
2.After planting the trees you should water them often.(被动语态）
The trees__should____ _be____ _watered_____ often after they__were___ _planted____.
3.I'm reading a book. The book is about Bill Gates.(合并为一个含有定语从句的复合句）
I'm reading a book__that__ _is____ _about____ Bill Gates.

1.We've been shown-----我们被展示
2.should be watered are planted
3.which is about