please be quiet 我知道是请安静,但是为什么要加be词,是 请是安静?怎么不用please quiet?

please be quiet 我知道是请安静,但是为什么要加be词,是 请是安静?怎么不用please quiet? Billy,please be quiet. Please be quiet 是什么意思? And please be quiet. Silence,please!Please be quiet! 请安静,是please be quiet.you be quiet 这句话吗? WILL YOU PLEASE BE QUIET PLEASE怎么样 Please be quiet in our library 此句中文和quiet是形容词吗? please be quiet 改为否定句 ______ ______ quiet ,please. Please be quiet (改成否定句) Please _____ ______ quiet. please be quiet 与 please keep quiet 区别是什么 Don't be l___.please be quiet Please be quiet. (改为同义句) _______ ________ quiet be quiet的同义句,（ ）（ ）quiet,please. be quiet的同义句,（ ）（ ）quiet,please. please be quiet.变否定句.为什么? so please be very quiet 的意思 please be ______(quiet) in the library