1 Seeing is believing./ Cf. To see is to believe.眼见为实( 对称原则)
2 * It is no use/ no good/ useless doing 做…(没)有用
It is a waste of time (/worthwhile) doing sth.做…是浪费时间/ 是值得的（注意是It is 开头）
区别 It is important/ necessary/ essential/ possible… to do sth.
3 There is no sense/no point/no harm (in) doing sth.做..没有意义/ 做…没有坏处
区别 There is no need to do sth 没必要做… （注意是There is 开头）
4 下列动词跟动名词doing做宾语 imagine想象, miss错过, mind介意, avoid避免, admit承认, appreciate感谢, keep继续, escape逃避, enjoy, excuse原谅, risk冒险, resist抵制，反对 , delay推迟, deny否认, dislike, suggest建议, stand忍受, fancy想象, finish, forgive , consider考虑, practise练习, postpone推迟, pardon原谅, understand
5 * allow, advise, forbid, permit 后跟的动词形式有两种:eg. allow doing / allow sb to do
6 require, want, need, deserve后跟动名词用主动形式（表示被动意义），但不定式用被动形式 The window needs cleaning.= The window needs to be cleaned.
7. * remember to do 记得去做/forget to do 忘记去做/regret to do 很遗憾的做
remember doing 记得做过/forget doing 忘记是否做过/regret doing后悔做过
8. * mean to do 打算做 & mean doing意味着…
* try to do 努力做 & try doing 试着做
*go on to do 继续做（下一件事）& go on doing 继续做（刚才没完成的事）
*stop to do 停下去做别的事 &stop doing 停下手里正在做的事
*can't help (to) do 不能帮忙做 &can’t help doing忍不住
* be afraid to do 不敢去做 & be afraid of doing害怕（某种结果）
9. to 在下列词组中是介词，接n./doing,
be devoted to致力于做 object to 反对 lead to 导致
close to接近 look forward to doing期待 in addition to doing除了
be equal to doing等于；胜任get down to doing开始做 object to /be opposed to doing反对
turn to 求助于 see to 照料 be reduced to 沦为
when it comes to 当谈到 pay attention to doing注意 on one’s way to doing,在做.的过程中
be used to／be accustomed to习惯, give one’s mind/time to doing专心于
10 跟动名词的常用词组: feel like doing想要, give up doing放弃, put off doing推迟,
can’t stand doing不能忍受, be worth doing值得, have a hard time doing , be busy doing, go doing， be sure of, be keen on喜欢, be fond of喜欢, insist on坚持, be tired of, be interested in, be afraid of, prevent…from doing, have trouble/difficulty (in) doing做某事有困难, spend/waste… (in) doing…, have a hard/ good time doing
e.g. The book is worth reading again.
Guilin is worth visiting/ Guilin is worth a visit.