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i have to be up early

来源：百度知道编辑：UC知道时间：2024/05/08 22:16:41

i have to be up early

为什么要加be 表示什么、

up 是形容词。前面必须需BE 动词。
have to 只是情态动词，不是实意动词，所以BE 必须用动词原型。

have to这样的结构后面必须跟动词,up不是动词,所以要用be来连接句子:

be up early意思是get up early
早起

up是形容词 be是动词
be up是起床的意思

up是形容词,做表语
have to do

have to +动词原形 be, 我必须早点起床

be up可以说是形容一种状态,如果不用be, 就应该是用get或其他一些什么动词了.

i have to be up early i have to be going now. I wish to be a ( ) when I grow up I have hooked up a video camera to the comp, I have decided to give up smoking是什么意思 i have money to use.为什么不说i have money to be used? be up to造句 We have to stop____books from the library because the time is going to be up. I have no choice but to give up. 这一句型里but to give up做什么成分？ i have you to be with everything will be easy 的中文意思是？