I afraid that I must go now 改错

I afraid that I must go now 改错 I am afraid I must be going I am afraid I must be going与I am afraid I must go的区别 我恐怕得去看医生了.I'm afraid that I must go to see the doctor.我写的：I'm afraid that I must see the doctor.这样写可以吗? I am afraid that if you are lost it ,you must pay for it的状语是那部分? 与that if有关的一道选择题I'm afraid ____ you've lost the knife,you must pay for itA that if B that I am afraid that I have to go.什么句型! I'm afraid that I could not go to shanghai I hope so,I hope that ,I afraid so,I afraid that各怎么用啊?急! I'm afraid that he can't ...能不能去掉“that”? i am afraid that.中的that可以省略吗?为什么? I am afraid that和I am afraid not 的区别 I'm afraid that I can't.为什么afraid后面没有跟of I'm afraid I can't hear you.这句话为什么afraid后不加that? I am afraid that I can not catch 和I am afraid I can not catch thant哪个正确 它的回答是i am afraid you can还是must-shall i go to the airport ? -i am afraid you can还是must I'm afraid that的从句问题I'm afraid that...that 后面的句子是什么从句? I'm afraid I must be going .这句话为什么用被动语态?