请问more than,no more than,not more

比…多,
不过,仅仅,例句与用法:
1.He is no more than a worker.
他仅仅是个工人.
2.It's no more than a mile to the shops.
离商业区不过一英里.
not more than 至多,不超过,不比...更...
例句与用法:
1.I'll stay here not more than three days.
我将待在这里最多不超过三天.
2.It is not more than thirty miles from London as he crow flies.
从这里到伦敦,直线距离至多30英里.

more than比……多
no more than=only
not more than至多

不仅仅，仅仅，不超过/至多
前面两个两个单词more than的却是“不仅仅”3个字，还有ls说的比……多的意思
no more than 却是“仅仅”2个字的意思