第一次遇到他的时候，他正在看书。

The first time I met him, he was reading a book.

youdao

当我在看电视的时候，他正在看书。

While I was watching TV, he was reading.

youdao

当我在看电视的时候，他正在看书。

While eI was watching TV, he was reading.

youdao

最后，我走向爷爷，他正在看书呢。

At last I went to Grandfather. He was reading a book.

youdao

这是我的爷爷，他正在看书。

This is my grandfather. He is reading a book.

youdao

我跑出来时，大吃一惊，我发现他正在看书。

When I ran out, to my surprise, I found him reading.

youdao

瞧，他正在看书。

Look! He is reading.

youdao

他正在看书。

He is reading books.

youdao

他昨天七点正在看书。

He was reading at seven yesterday.

youdao

当他正在清洁地板的时候，我正在看书。

I was reading books while he was cleaning the floor.

youdao

我正在看书，他来了。

When I was reading a book, he came.

youdao

当他到达书店时，刘小姐和王小姐正在看书。

C. When he got to the bookshop, Miss Liu and Miss Wang were reading.

youdao

当他妈妈回来时，他假装正在看书。

He pretended to be reading a book when his mother came back.

youdao

我正在看书时他进来了。

While I was reading, he came in.

youdao

我正在看书时他进来了。

While I was reading, he came in.

youdao