更新时间：2021-06-09 04:22:00作者：admin2
1.现在进行时,be+动词ing
2.过去进行时,were/was+动词ing
3.adj+动词ing,一般的adj后都是不定式的形式,但有2个词除外.busy+动词ing,worse+动词ing
4.介词后的动词都+ing
5.to分介词和小品词,小品词后+to do，而介词后就＋ing,如：be used to doing、prefer doing to doing、make a contrubution to doing、look forward to doing、pay attention to doing、accroding to doing、belongs to doing……
6.动词+动词ing，如：admit, advice, anticipate, appreciate, avoid，consider, delay，deny，dislike, enjoy，escape，excuse, fancy，favor, finish，imagine，include , keep, mind，miss, postpone, practise，prevent , propose, resist, risk, suggest……