介词后面是可以接宾语从句的，如：Pay attention to what you are doing. 注意你做的事。It all depends on how you handle it. 这都取决于你如何处理。I often think about where I met you. 我常想起我见到你的地...
Ifthat’s hard to understand, let’s keep it as simple as the arugula at the backof my refrigerator. Mike Curtin sees my arugula storyall the time — but for him, it’s more like 12 boxes of donated straw...
Thank you for having taken so much trouble to help.和Thank you for taking so much trouble to help.有什么区别，前面那一句是动名词完成式的被动语态？还有上面句子的句子成分解析，特别是to help作什么成分？...
有书上说，下面两句相等（现在分词可以用完成式和一般式）：Having finished his work, he began to have dinner.=Finishing his work, he began to have dinner.今天看到这个句子：Having found a hotel, we looked...
我知道代词用来引出被指代的事物时可以，如：This is my friend Tom. It is a lovely dog. 等这次又看到一句话：The writer tells us to keep it shut if the door of the room is warm.这句话中it指代的是door。现...