insist on 和 insist 有相同意思,区别在于用法和句型,
insist on 是不及物动词用法,要接名词短语,
insist (that) 是及物动词用法,要接从句.
例句：
1，John insisted on paying for lunch today.
约翰坚持今天要吃午饭。
2，John insisted that I let him pay for lunch today.
约翰坚持要我今天付他吃午饭。
John insisted that he should pay for lunch today.
约翰坚持要他今天要吃午饭。
扩展资料
insist，英语词汇，意思为坚持，坚持认为。
vi.
坚持；坚持认为；强调(常与on，upon连用):
I insist on his innocence.
我坚持认为他是无辜的。
to insist upon the importance of being punctual
强调准时的重要性
一定要，坚决要求；坚决主张(常与on， upon连用):
He insists on being present.
他一定要出席。
He insists on it that I go with him.
他坚决要我和他一道去。
[古语]被放置(常与on， upon连用)
[古语]不屈不挠，紧随不舍(常与in，on连用)
vt.
坚持，坚持认为,只想不一定做(常与that连用):
I insist that he is innocent.
我坚持认为他是无罪的。
坚决要求；一定要：
They insist that I stay there for supper.
他们坚决要求让我留下吃晚饭。
insist on 坚持，坚决要求;督促，强调
insist upon 坚持…
参考资料：百度百科-insist（英语词汇）