英语 not a 和 no

题目

英语 not a 和 no
there is no need ...at all 和 there isn`t a need ...at all能一样么
在任何情况下亦可这样转换么

答案

是的.比如说：
there is no need to worry at all == There isn't any need to worry at all.
no ==not a /an（+可数名词单数）
no== not any（+不可数名词或者可数名词复数）
1 She has got no friend here==She hasn't got a friend here
2 She has got no information for us == She hgasn't got any information for us
3 She has no English friends== She hasn't got any English friends.