He isn`t lose his heart.He didn`t lose his heart.有什么区别?也就是didn·t和isn·t的区别?RT.最好能详细说说什么时候用DO什么时候用BE.

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/09 01:08:05
He isn`t lose his heart.He didn`t lose his heart.有什么区别?也就是didn·t和isn·t的区别?RT.最好能详细说说什么时候用DO什么时候用BE.

He isn`t lose his heart.He didn`t lose his heart.有什么区别?也就是didn·t和isn·t的区别?RT.最好能详细说说什么时候用DO什么时候用BE.
He isn`t lose his heart.He didn`t lose his heart.有什么区别?也就是didn·t和isn·t的区别?
RT.最好能详细说说什么时候用DO什么时候用BE.

He isn`t lose his heart.He didn`t lose his heart.有什么区别?也就是didn·t和isn·t的区别?RT.最好能详细说说什么时候用DO什么时候用BE.
He isn`t lose his heart.是错句子.因为lose是动词 前面只能用didn't,不能用isn't.
简单的说,句子里已经有了动词作谓语,就只能用didn't,因为didn’t不是动词.只用句子中没有了动词作谓语,例如只有名词,形容词等,则用is或isn't作为系动词,使句子完整,例如 He isn't a handsome guy.

楼上正解~
英语语法中,一个句子里面不能同时出现两个动词
be动词表示一种状态,具有实际意义,后加名词或形容词
助动词do,并无实际意义,可以在后面再跟一个实义动词