she must have been ill.------she didn\t come to school yesterday .A for B because C since D as为什么用FOR 不用BECAUSE?

I think she was old.我认为她原来是老的?I don't think she was.She can't have been old.She must have been young.这怎么翻译I think it was cheap.I don't think it was.It can't have been cheap.It must have been expensive.同上.最好将语 She can't have been Danish. and She must have been Swedish. Your dream will come true.She must have been wonderful. i think he must have been a mechanic,中的must和have been是什么词啊? i must have watched 和 i must have been watch TV意思一样吗 为什么 一道完成句子she knows this place so well ,she (must have lived) here.为什么不用must have been lived? I must have been dreaming.(改为否定） MUST have been donemust have been doing must have been +名词must have done以上的区别还有是否有must have been done 的用法 和区别EG1 I must have been sleeping 2 your dress must have been expensive.3 I didn't hear the phone,I must have I know that it must be my father.过去式应该是...I knew that it must have been my father.I knew that it must be my father.哪个对?我一直都认为第一句must have been 是对的但昨天我看见一句She knew that it must be the baker. 新概念1第130课课后练习,i think she was Danish(Swedish)I don't think she was.She can't have been Dashin.She must have been Swedish.这个不是怪怪的吗?什么叫做那时肯定是瑞典人,那现在不是了?不能直接说She must be Swe must have been done must have done must have/ must have been的区别 She must have been a beauty in her day.这句的have been 怎么理解啊,不懂.have been 不是后面+done 所有的have been. 1.I didn’t hear the phone.I ___ asleep.A.must beB.must have been She must have been tricked 是否确的说法吗?用have还是用has 为什么? Has she ever been late for school?I'm afraid she ___________ by someone on the way here.A.must have been troubled B.must be troubled C.had been troubled D.would have been troubled 麻烦讲一下原因最好 She didn't hear the phone.She ___ asleep.A may be B must be C should have been D must have been she had been shopping with har mom at the supermarket.she must have been six years old,and still