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1. a lot of为口语,后面可跟可数名词复数形式,也可跟抽象的或表示物质的名词,在否定句中习惯用not many或not much, a lot可以用作状语.
What will you do if you win a lot of money?如果你赢了许多钱,你将做些什么呢?
Its driver had a lot of trouble trying to stop it.开这辆车的人很难把它停下来.
2.a great deal of 后面只能跟抽象名词或物质名词,a great deal也可用作状语.
The race gave every one a great deal of pleasure.这次比赛给了大家许多乐趣.
There was a great deal of excitement just before it began.比赛开始前,人们非常激动.
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