a lot of、lots of、a number of( /large numbers of)、a great deal of、plenty of的區(qū)別：五個(gè)“名詞+介詞”短語都表示“大量,許多”,a lot of(或lots of)既可以修飾不可數(shù)名詞也可以修飾可數(shù)名詞的復(fù)數(shù)形式,可以相應(yīng)地?fù)Q為much和many；
plenty of“足夠、大量”,既可以修飾不可數(shù)名詞也可以修飾可數(shù)名詞的復(fù)數(shù)形式。
a number of / large numbers of只可以修飾可數(shù)名詞復(fù)數(shù)形式(它修飾的詞作主語時(shí)謂語用復(fù)數(shù)形式)可以換為some、many、a lot of、plenty of。
a great deal of只可以修飾不可數(shù)名詞(它修飾的詞作主語時(shí)謂語用單數(shù)形式)可以換為much。
如：A lot of people think that time is money.(許多的人認(rèn)為時(shí)間就是金錢。) /
I don’t have to do it in a hurry because I have plenty of time.(我用不著趕忙,因?yàn)槲矣谐渥愕臅r(shí)間。) /
I have a number of letters to write today.(今天我有好多信要寫) /
I spend a great deal of time/money on shopping.(在購物方面我花費(fèi)了大量的時(shí)間/金錢。)

再介紹一個(gè)小知識(shí)：one與ones用來代替上文的一個(gè)或多個(gè)人或事物,前面可以加冠詞、形容詞、指示代詞which等。如：
Which jacket would you like, this one or that one?(你要哪件夾克,這件還是那件？
I don’t like the green ones.(我不喜歡綠色的那些)
?