【什么语法】your excuse better be good这是祈使句吗?

【什么语法】your excuse better be good这是祈使句吗? excuse me,什么（be） you mark Just want to be your excuse,nothing more.I do not want to lose you. excuse的用法The boy asked the teacher to excuse---.a.him to be late for classb.that he had been late for classc.him of being late for classd.his being late for classhis being late for class这是个什么用法,请详细说明这个语法点. To be your angel like the vampire 语法有错吗? Excuse和Excuse me有什么区别 excuse me.can you tell me how to be qualified as a memeber in your team?Thanks. Excuse me,where ______(be) your English teacher She ______ here just now .But now she’s not . Your words 什么 (be) right excuse me 什么意思? Excuse me 什么意思? 用所给单词的适当形式填空4._______(be)your pen in your backpack?5.Excuse _______(l).ls that his key? 看下这句话有什么语法问题没,有的话如何修正,There are a lot of features in this machine that will be very useful for your cleaning . Excuse me.What's your name? excuse me ,may i know your 年龄 Excuse me,is this your car?... 补全对话 Excuse me is this your pen Yes,it is 什么 you are 什么 you i can not grant your request that to be your girlfriend这里的that可不可以省略省略that有涉及语法吗?什么情况下that可以省略什么情况下不可以?