no和none (of)可以替代not a或not any起到加强语气的效果，例如：
There isn't a train until tomorrow. （普通否定）对比There's no train until tomorrow. （强调）
Sorry, there isn't any left. （普通）对比Sorry, there's none left. （强调）
He didn't have any of the usual symptoms.对比He had none of the usual symptons.
该用法可以延伸到至其它衍生词，例如：
There isn't anyone/anybody here. 对比There's no one/nobody here. （强调）
She wasn't anywhere to be seen. 对比 She was nowhere to be seen.
Why don't you ever call me? 对比 Why do you never call me?
通常句首或and, but, that后面不用not a/any, not anyone等，常用no, none of, no one等，例如：
No force was needed to make them move. （不是Not any force was needed...）
Most players are under 16 and none of them is over 20. （不是...and not any of them...）
I'm sure that nothing can go wrong. （不是...that not anything can...）
正式或书面文中句首或and, but，that后面用not，例如：
Not a sound came from the room. （非正式There wasn't a sound from the room.）
She kept so quiet that not a soul in th house knew she was there.
No后面既可以跟单数也可以跟复数名词，意义没有太大差别，用单数名词的话更加正式一点，例：
No answers could be found. （或更正式的话为No answer...）
We want to go to the island but there are no boats to take us. （更正式为...there is no boat）
期待单个个体回应时no+单数名词，期待复数个体回应时no+复数名词，例如：
I phoned Sarah at home, but there was no answer. （不是...but there were no answers.）
He seems very lonely at school, and has no friends. （不是...no friend.）
no和none of可以和其它单词组成短语起到强调效果，no amount of+不可数名词，not one.../not a single...+单数可数名词，not one of...+复数名词，例如：
The company is so badly managed that no amount of investment will make it successful.
Not one person remembered my birthday. （不能是Not a single person...）
Not one of the families affected by the noise wants to move.
口语中和no搭配的固定短语有：No wonder（不出意料），No idea（不知道），No comment（无可奉告），No way, No chance（没可能），No problem, No bother（没事儿，不难办），例句如下：
'The computer's not working again.' 'No wonder. It's not plugged in!'
'Thanks for the lift.' 'No problem. I had to go past the station anyway.'
停课不停学，为学生答疑解惑