4、正确区分可数名词与不可数名词
（1）英语名词可以分为可数名词和不可数名词
可数名词是表示可以计数的人、事物的名词。可数名词一般有单数和复数两种形式，有些词的单复数形式相同。不可数名词是表示不可以计数的事物的名词。不可数名词一般不分单数和复数，也不能直接与a/an连用。一般说来，个体名词是可数名词、抽象名词、物质名词和专有名词是不可数名词；集体名词根据情况，有时用作可数名词，有时用作不可数名词。有时有些物质名词和抽象名词也可转用作个体名词。
Tables are made of wood.桌子是有木头做的。
Father went to his doctor for advice about his heart trouble. 爸爸去找他的医生询问他的心脏病的建议。
He gained his wealth by printing works of famous writers. 他靠印刷名家著作发了财。
（2）可数名词和不可数名词各有其不同的修饰语
①只修饰可数名词单数的
如a/an，one，another，either，neither，every，many a等。 
I don't like this book, give me another one.我不喜欢这本书, 请另外给我一本。
Neither shoe feels comfortable.两只鞋都感觉不舒服。
An apple a day keeps the doctor away.[谚] 一天一个苹果, 医生不上门(比喻不生病)。
②只修饰可数名词复数的
如these，those，few，many，a good/great many，a good/great number of，both，several及二以上的数词等。
It is impossible for so few workers to do so much work in a single day.如此少的人在一天内做这么多工作是不可能的。
I'm afraid he did not do very well in the dictation. There were quite a few spelling mistakes in it.恐怕考试他听写没做好，里面有很多拼写错误。
Were there many people at the meeting?有很多人到会吗?
③只修饰不可数名词的
如a little，a bit of，much，a great/good deal of，a great/large/small amount of等。
There was so much food that we couldn't eat it all. 食物太多了，我们吃不完。
There's a little bit of time left. 只剩一点儿时间了。
④既可修饰可数名词又可修饰不可数名词的有the，one's，some，any，no，all，a lot of，lots of，plenty of，a large/small quantity of，which，what，other，half，one-third等。some在解释为 “某一”，any在解释为”任何”时也可修饰可数名词单数。this和that只能修饰可数名词单数和不可数名词，last，next，the other和序数词只能修饰可数名词单数和复数。
I need a lot of cloth, for I'm going to make many clothes.我需要大量的布，因为我要做很多衣服。
I have some books.我有一些书。
He has waited some time.他等了一会儿了。