什么叫分词作状语，一看就懂

南宁公园老头:
having read the book,此时不叫做现在完成时，准确的说法应该是现在分词的完成式表示该动作发生在谓语动词之前。

mikecao123:
有个句子，rising sea mean it is losing land, which used to be buffer that prevented it from damage,假如我把that去掉，是不是可以改成preventing

睡回笼觉夫斯基:
老师，那那个欺骗是发生在她难过之前，，可不可以用过去完成时态呢

【回复】那你可以用不定式，to have done表示不定式的动作发生在谓语动词之前
【回复】你是对的更准确的应该是过去完成被动语态，即because she had been cheated....