• 常见的带介词to的短语,后接-ing或名词。 • • • • • • • admit to承认 contribute to捐助、贡献 get down to着手做 give way to让位于 keep to 坚持、遵守 lead to 导致 look forward to期待 turn to 求助于 stick to坚持 be used to 习惯于 devote oneself to 献身于 be familiar to 为……熟悉
此处为现在分词的完成式作时间状语, 表明该动作发生在realized之前。
4. _______ A such heavy pollution already, it may now be too late to clean up the river. A. Having suffered B. Suffered C. To suffer D. Suffered 由already提示,分词动作发生在谓 语之前,故须用分词的完成式。
(3)“with/without+n.+-ing” 结 构 在 句 中 作 状 语,表示伴随情况或时间、原因等。如:
His hair became grey with the years passing. With final-exams coming, he feels very nervous.
Having invited him here tபைடு நூலகம் speak, we’d better go to his lecture.
注:(1) 分词作状语时,它的逻辑主语与主句 的主语一致。V--ing表主动或进行,--ed 表完 成或被动. •Looking _______(look)out of the window ,we can see a big tree. • ________ (see)from the window, a big Seen tree can be seen.