问题描述：
用If虚拟条件句改写下列句子,
1.He doesn't speak very clearly——that's why people don't understand him.
2.That book is too expensive,so I'm not going to buy it.
3.It's raining,so we can't have lunch in the garden.
最后一句怎么改，前两句会了....
1.He doesn't speak very clearly——that's why people don't understand him.
2.That book is too expensive,so I'm not going to buy it.
3.It's raining,so we can't have lunch in the garden.
最后一句怎么改，前两句会了....
问题解答：
我来补答展开全文阅读