曾经有朋友问我:I look forward to hear from you soon 对,还是I look forward to hearing from you soon 对。我说后者对,前者错。他说,为什么to后面的动词可以有-ing呢? 这问题很有意思,相信其他人也会这样问。 这问题就是今天的话题了。 大家知道,to是不定式动词(Infinitives)的标志,如:to come, to go, to eat, to sleep, to play, to work, to sing, to take等等。 不定式动词是英语三种无限定动词(Non-finite verbs)中的一种。它的主要功能包括协助组成动词句型。例如: 1. 主语+动词+不定式动词/短语 (1) Helen likes to sing. (2) The man wants to see you. 2. 主语+动词+宾语+不定式动词/短语 (3) Jack advised me to come. (4) She asked the boy to go out with his brother. 3. 主语+动词+宾语+不带to不定式动词/短语 (5) We all heard them laugh. (6) They saw the leaves fall down. (7) Did you notice the old man rush to the bus stop? (5)-(7)里的langh, fall, rush都是不带to的不定式动词或短语。 此外,当不定式动词在助动词或情态动词后面时,也是不带to的。例如: |