More than
1.More than +名词    表示“多于……”、“非但……尤其是”如：
Modern science is more than a large amount of information.
Jason is more than a lecturer; he is a writer, too.
2.More than +数词    含“以上”或“不止”之意，如：
I have known David for more than 20 years.
Let‘s carry out the test with more than the sample copy.
3.More than +形容词  表示“很”或“非常”的意思，如：
In doing scientific experiments, one must be more than careful with the instruments.
I assure you I am more than glad to help you.
4.肯定“more”后面的而否定“than”后面的，表示是“与其说……不如……”，如：
The difference between pure linguistics and applied linguistics is more apparent than real.
This book seems to be more a manual than a text.
5.More than或＋含“can”的分句时表示“否定意”，如：
That's more than I can do.
Don't bite off more than you can chew.
6.另外，“more than”也在惯用语中，如： More offen than not （经常），people tend to pay attention to what they can take rather than what they can less is more大道至简give.
1.no more than同样不；仅仅，只有
It's no more than a misunderstanding. 这只是个误会
2.not more than不比……更，不如；至多
I'll stay here not more than three days. 我将待在这里最多不超过三天。
3.no/not any more……than两者一样都不……，和……一样不……
A whale is not a fish any more than a horse is.
鲸之非鱼，无异于马之非鱼。
4.not more ... than = 不如You are not more careful than he is. 你不如他仔细。
5.no more ... than = 和......一样不(否定两者)You are no more careful than he is. 你和他一样不仔细。
Less than
1.no less than不亚于，竟达……之多
The audience was no less than five thousand. 听众有五千人之多。
That hotel probably costs no less than 20 dollars a night. 那间旅馆的住宿费大约要20元一晚呢。
2.no less .. than不少于,不亚于
He is no less a person than a minister他的身分不亚于部长。
3.not less than不比……差，至少
I'll stay here not less than three days. 我将待在这里至少三天。
4.4.han至少和…一样
She is not less beautiful than Mary她至少和玛丽一样美丽。
5.no/not any less
Are we all not any less than 50th cousins?