This is chair/This is a chair.这两句哪一句是错误的?
问题描述：
This is chair/This is a chair.这两句哪一句是错误的?
This is chair./This is a chair.这两句哪一句是错误的?两句想表达的意思有什么不同?
答
This is chair是错误的.前面用is后面就要用单数