查人人中国名人网是一部内容开放、自由的互动网络百科全书客观、专业、权威的知识性百科全书
来源:百度文库 编辑:查人人中国名人网 时间:2024/05/09 14:59:25
This----It
This改为It这是固定句型It be adj. (for sb.) to do sth.
It isn't easy to learn English well
This is hard to learn English well.
This --> It