I'm afraid I must be going .这句话为什么用被动语态?

I am afraid I must be going I afraid I'm must be going. be going 是什么时态 I am afraid I must be going与I am afraid I must go的区别 I'm afraid I must be going .这句话为什么用被动语态? “I really must be off now?Well,I really must be off now?该如何回答?为什么这个问句最后是以问号结尾？是不是有“难道我一定要走吗？”的意思？回答可不可以是“I`m afraid you must” 交际用语测试 1.— I’m afraid I must be off now.—Oh?______________ A.See you later,then.B.I i'm afraid so. I'm afraid () dog “I'm afraid ”是什么意思? I'm afraid --it's getting late.I'm afraid I must be going now.--OK.( )a.take it easy b.see you c.stay longer d.go slowly I'm not afraid to be a stand. i'm afraid there___a meeting this afternoon(be) A:Must I get to school on time?B:I'm afraid ______ _______ nothing i will be afraid Nothing I will be afraid 10.I'm afraid we must leave now.--- ________ .--- No,I'm afraid we really must.We have to meet our teacher at ten o'clock.A.Oh,please do B.Don't be afraid C.Yes,it's too late D.Must you?It's still early.选什么呀 --It‘s getting late.I'm afraid I must be going now.--OK.______--It‘s getting late.I'm afraid I must be going now.--OK.______ A.Take it easy.B.Go slowly.C.Stay longer.D.See you.