is be，这种形式不正确，因为is是be动词，后面不能再加动词原形be；is to be，表示“已经确定，确信，确认“之意。例：The boy is to come here. …
在英语里，“ be + to do ”结构可用来表示将来时间，它的具体用法如下： 表示“按计划、安排（要做某事）” We are to meet at the school gate. （ …
The irregular verb to be is the most complicated of all the English verbs—and it just so happens to be the most used, too. The to be verbs are …
"To Be is to Do" means that if you want to BE something (an actor, teacher, good person) you need to DO the things it takes to be called …
更多内容请点击：is be, is to be,will be 和is being 用法区别 - 百度知道 推荐文章