这是我昨天买的书（普通句型）；我昨天买的是一本书（强调句型）为什么形式一样?这是我昨天买的书（普通句型）：it'sthebookthatIboughtyesterday.ThebookiswhatIboughtyesterday.我昨天买的是

Question

这是我昨天买的书（普通句型）；我昨天买的是一本书（强调句型）为什么形式一样?
这是我昨天买的书（普通句型）：it's the book that I bought yesterday.
The book is what I bought yesterday.
我昨天买的是一本书（强调句型）：it is a book that I bought yesterday.
What I bought yesterday is a book.
it is a book which/what/that I bought yesterday,这些都正确吗?

Answer 1

it is the book which I bought yesterday.定语从句 这是我昨天买的书.（这里应该用定冠词the）it is a book what I bought yesterday.错误it is a book that I bought yesterday.强调句型,强调的是a book.我昨天买...