用英语简单句的五种基本句型造句要三种时态,最好简单点

问题描述:

用英语简单句的五种基本句型造句要三种时态,最好简单点

I have been to London in the summer holoday.陈述句 现在完成时Did you finish your homework?一般过去式 疑问句I am a teacher.一般现在时