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动名词与现在分词做定语的区别:
动名词做定语说明所修饰名词的用途;现在分词做定语,表示所修饰名词进行的动作。
a walking stick 拐杖(动名词, a stick for walking)
a sleeping car 卧铺车厢(动名词, a car for sleeping)
the rising sun 正在升起的太阳(现在分词)
the changing world 变化中的世界(现在分词)
现在分词完成时的被动形式;Having been+过去分词After I had been instructed to drive out of town, I began to acquire confidence.
介词短语作时间状语,主从句的主语一致时,可简化从句。
suppose (supposing):常用于一个句子或从句前,意思是what would happen if,用来假设一个条件或某种情况。动词要用一般现在时或一般过去时。如果用过去时,所假设的情况可能性会很小。Supposing we miss the train—what will we do then?
We’d love to attend the party, supposing (if) we don’t have to work late that day.