many, much取a lot of三者皆意味“好多”。
many 以及much就可#信任句中， 也可#否认句以及疑难句中
many只建饰可数名词复数，常组成how many, too many搭配
People cut down many trees, so animals are in great danger.
人类砍伐了洪量的树木，致使动物处于极大的危殆当中。
much只建饰没有可数名词,常组成how much, too much, much too搭配
There is not much water in the bottle.这个瓶子里不太多水了。
Thank you for telling me so much knowledge about nature.道谢你奉告尔这么多闭于当然的常识。
a lot of(＝lots of)既也许建饰可数名词复数，又也许建饰没有可数名词,但是只可#信任句中。倘使要将含有a lot of(lots of)的信任句改成否认句或许疑难句，则必需用many或许much包办。
There are a lot of students in the library.
否认句：There are not many students in the library.
