...教版新教材(2019)必修一的Unit 4 Natural Disaster的Listening and
Talking部分,听力中有这么一句话(介绍地震来袭时在室内应该如何自我保护):Drop down onto your hands and knees, cover your head with your hands,
and stay away from glass, windows or anything t...
On Saturday afternoon the phone rang. I was still in bed , and had to force myself to roll over, pick it up and mutter hello. 这个句子为什么and前面加了逗号,并且pick和mutter用的是原型,请问这是什么用法?