还有一句对话---- I must to go.------so long.请问SO LONG

还有一句对话---- I must to go.------so long.请问SO LONG 有这么一句英文对话-I must to go.------cheers!请问这里cheers 英语must be学了新概念第一册一课,如下课文,you must be home at past half eleven.不懂这句muse 为什么不说you must come home at past half eleven吗?还有一个问题,where are you going to do.回答可以是i am going to do go to TO以及BE been的用法I must to be take a nap.i must be take a nap.i must to take a nap.i must take a nap .请问这4句中 哪一句是对的?我总是搞不明白到底什么时候要加BE,什么时候不加be,还有什么时候要加TO,什么时 :It's a nice day,isn't it?:Yes,it is.But the weather report says it's going to --in the afternoon.还有一句：I ---- not.是补全对话哦 i must ask you to stay away from me. 句must ask you to 是什麼意思 I must go to school now改否定句 I must go to bed early 如何变否定句 I must say ‘Please’to you(改为同义句) I must to olo. i must be to i must ask someone to pierce my ears 同义句RTI MUST ____ ____ ____ ____ I must ask him to stop smoking改同义句I must ask him to _____ _____smoking I must ask him to give up smoking.改为同义句：I must ask him to ___ ___. Belive to myself!后面还有一句How great I am! 英语翻译不好意思,还有一句:I was encouraged to hear you'll give us your support. You must listen to your teacher carefully.(变为祈使句)还有一句You mustn't eat too much meat.(变为祈使句） I'm going to buy a pair of shoes.答句还有一句 The rain comes from the clouds.