Try to do 努力，企图做某事。
Try doing 试验，试着做某事。
You must try to be more careful. 你可要多加小心。
I tried gardening but didn’t succeed. 我试着种果木花卉，但未成功。
Go on to do 做了一件事后，接着做另一件事。
Go on doing 继续做原来做的事。
After he had finished his maths ， he went on to do his physics. 做完数学后，他接着去做物理。
Go on doing the other exercise after you have finished this one. 作完这个训练后，接着做其他的训练。
Be afraid to do 不敢，胆怯去做某事，是主观上是什么原因不去做，意为 " 怕 " ； be afraid of doing 担忧出现 doing 的情况、结果。 doing 是客观上导致的，意为 " 生怕，恐怕 ".
She was afraid to step further in grass because she was afraid of being bitten by asnake. 她生怕被蛇咬着，而不敢在草丛中再走一步。
She was afraid to wake her husband. 她不敢去叫醒她老公。
She was afraid of waking her husband. 她生怕吵醒她老公。
Interested to do 对做某事有兴趣，想知道某事。
Interested in doing 对某种想法有兴趣， doing 一般为想法。
I shall be interested to know what happens. 我非常想了解出了什么事。（想知道）
I’m interested in working in Switzerland.Do you have any idea about that ？ 我对在瑞士工作有兴趣。你想过这事吗？（一种想法）
mean to do 计划、想
mean doing 意味着
I mean to go ， but my father would not allow me to. 我想去，但我爸爸不愿让我去。
To raise wage means increasing purchasing power. 赠加工资意味着增加购买力。
begin （ start ）
begin/start to do sth begin/start doing sth.
1 ）说到一项长期活动或开始一种习惯时，用 doing.
How old were you when you first started playing the piano ？ 你多大岁数时开始弹钢琴？
2 ） begin ， start 用进行时时，后面动词用不定式 to do I was beginning to get angry. 我开始生起气来。
3 ）在 attempt ， intend ， begin ， start 后接 know ， understand ， realize 这种动词时，常 用不定式 to do.
I begin to understand the truth. 我开始了解真相。
4 ）物作主语时 It began to melt. 感官动词 +doing/todo 感官动词 see ， watch ， observe ， notice ， lookat ， hear ， listento ， smell ， taste ， fe el+do 表示动作的完整性，真实性； +doing 表示动作的连续性，进行性
I saw him work in the garden yesterday. 昨天我看见他在花园里干活了。（强调 " 我看见了 " 这个事实）