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insist on ,stick to (doing),keep at,keep doing sth,keep on doing keep to do sth.go on doing goinsist on ,stick to (doing),keep at,keep doing sth,keep on doing,keep to do sth.go on doing,go on to do,go on with ,有什么区别
insist on ,stick to (doing),keep at,keep doing sth,keep on doing keep to do sth.go on doing go
insist on ,stick to (doing),keep at,keep doing sth,keep on doing,keep to do sth.go on doing,go on to do,go on with ,有什么区别

insist on ,stick to (doing),keep at,keep doing sth,keep on doing keep to do sth.go on doing goinsist on ,stick to (doing),keep at,keep doing sth,keep on doing,keep to do sth.go on doing,go on to do,go on with ,有什么区别
insist【用法一】 v.坚决要求；坚持要；一定要例1：we insisted on his apology.我们要他赔礼道歉.例2：she insisted on seeing us home.她坚持要送我们回家.例3：i insisted on their arriving there ahead of time.我坚持要他们提前赶到那.注：1）insist on 后面不能接由“名词或代词 + 动词不定式”构成的复合宾语.不能说：the teacher insisted on all the compositions to be handed in on monday.2）insist +宾语从句（从句中的谓语动词常用虚拟语气,即should + 动词原形或省去should）.例如：the young men insisted that they （should） be sent to the front.那些年轻人坚持要求被派往前线去.【用法二】v.坚持认为,坚持说,强调1） insist on +名词.例如：he insisted on his innocence.他坚持说自己无罪.2）insist on + 宾语从句在表示一个客观事实时（谓语动词不用虚拟语气,而应用陈述语气）.例如：the boy insisted that he hadn’t broken the glass.那小男孩坚持说他没有打烂玻璃杯.
stick to doing sth 坚持做某事 Reporters should stick to investigating the facts.记者应坚持调查事实.
go on doing sth 是指停了后,继续做同一件事
go on to do sth是停了后,继续做另外一件事
如 After dinner,he went on doing his homework.意思是晚饭前他也在做作业
After dinner,he went on to do his homework.意思是晚饭前他做了别的事,饭后他继续做事,但换成写作业了.
continue doing=go on doing
continue to do =go on to do
keep doing 指一直做,可以指短时间,也可以指长时间,指一种状态.
如 he kept doing homework this afternoon.
or he kept playing basketball this term.
1.keep at sth 坚持做某事.如：
Keep at it.坚持做.
He kept at the job until finished.他坚持把工作干完.
2.keep doing sth
(1) 不断地或一直做某事(动作之间略有间隔).如：
They kept talking about it.他们一直在谈论此事.
My shoe laces keep coming undone.我的鞋带老是松开.
注：此用法可与 keep on doing sth 换用.
(2) 一直在做某事(无间隔).如：
He kept standing during the meeting.开会时他一直站着.
He kept hoping that they would have chance to come to China some day.我一直希望什么时候有机会到中国来.
注：此用法通常不能与 keep on doing sth 换用.
3.keep on doing sth
(1) 不断地或一直做某事(动作之间略有间隔).如：
He kept on looking at us.他老是瞧我们.
Don’t keep on asking questions like that.不要老是问那样的问题.
注：此用法可与 keep doing sth 换用.
(2) 继续做某事(即将一直在做的事继续做下去).如：
He kept on working after dark.天黑了我们还继续干.
Don’t give up; keep on trying.别灰心,继续努力.
注：这样的 keep on doing 有时可与 go on doing 换用.如：
The boys kept [went] on doing their homework in spite of interruptions.尽管有干扰,孩子们仍继续做自己的作业.

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