...from USA?Has your former friend come back from USA?分析一下这两句话的区别—______ you ______anywhere before" —Yes, but I can't remember where I______. A. Did surf surfed B. Have surfed surfed C. Did surf have surfed D. Have&nb...
...好!在理解句子It has been three months since we had winter vacation的时候我遇到问题:have winter vacation这个动词短语的动词have是非延续动词还是延续性动词?如果have在这里是非延续性动词,It has been three months since we had winter vacation是否翻...
1) I forgot to repair (repair) my watch last weekend, so I had to use my father’s. 为什么?
2) I regretted making (make) such mistakes. My parents were angry with me. 为什么?
— Li Hua is said ______ abroad for four years. Do you know which country he studied in?— Australia.A. to have studied B. studying C. to be studying D. having studied请问选择哪个?为什么?
Strict laws protect a park created at the heart of the mountain range, embracing many varied habitats, from alpine woods filled with snubnosed monkeys to the parallel gorges down which thunder the headwaters of three great rivers, the Yangzi, Mekong and Salween.我想问下这里down which thunder...