在英语里coms been、must been和may been和come have been、must have been和

题目

在英语里coms been、must been和may been和come have been、must have been和
may have been的区别?请举例!哪些词是宾语、定语、介词,请举例!
coms应该是comes

答案

你说的应该是can/could be、must be、may/might have been、must have beencan/could be：表猜测,可能must be:一定may/might be：可能,语气比can/could弱must have been:一定做过,表动作已发生may/might have been:...