a lot of

a lot of
许多，大量
The boy had a lot of pocket money.
这男孩有许多零用钱。
I'm under a lot of pressure.
我的压力很大。
China does a lot of trade with many countries.
中国和许多国家进行多方面贸易。
It takes a lot of labor to build a railway.
修筑一条铁路要花费许多劳动力。
冰箱里有足够的鸡蛋。
Don’t worry about it. We have plenty of time.
不要着急，我们有充裕的时间。

详解：

英语中有很多短语表示“大量；许多”，根据性质可分为以下三类：
★ 修饰可数名词的有：a good / great many, a large / great number of, scores of等，谓语动词用复数形式。如：
A great / good many words and expressions have come into the language from American English.
这门语言吸收了美国英语中的许多单词和短语。
There were scores of boxes, all waiting to be checked and loaded. 大批的箱子等着检验后装运。
★ 修饰不可数名词的有：a large amount of等，谓语动词用单数形式。如：
He has spent a large amount of money on his new house.
他在新房子上花费了许多钱。
★ 既能修饰可数名词，又能修饰不可数名词的有：a lot of, lots of, plenty of等，谓语动词根据被修饰的名词是可数还是不可数来决定单复数形式。如：
There are a lot of / lots of people in that room.
那个房间里有许多人。
There’s a lot of / lots of rice in the bag.
那只口袋里有许多大米。
There are plenty of eggs in the fridge.

a little<-->a number of