...在完成时haven't吗?didn't只能用在must have done表一般过去时的非被动语态里吗?
She must have been there yesterday, didn't she? 这里可以用wasn't she吗?wasn't/weren't只能用在must have been done被动句里吗?
请老师分析一下类似以下句子的意思以及句子成分:
Not a day passes but we use electricity in our daily life.
Not a day goes by when I don't think of my old friend Jim Green.
谢谢老师!
英语是可以说 deep into the night 的。如:They danced deep into the night. 他们跳舞直到深夜。They worked deep into the night. 他们工作到深夜。They talked deep into the night. 他们谈到深夜。The meeting continued deep into the night. 会议开到深夜。请问这样...
...s probably lower than it has ever been in the United States.请问:句中的 for ambition as a healthy impulse 是作定语吗?其中的 for ambition 是作什么成分,as a healthy impluse 又是作什么成分?