Mostly, we will use “There are a lot of” with countable nouns, when we discuss plurals, and “There is a lot of” with uncountable nouns, but there is of course flexibility here – in many cases it may be down to the individual’s interpretation of the sentence.
a lot of是口语和书面语中最常见的用语,它既可以修饰可数名词（相当于many）,也可以修饰不可数名词（相当于much）,通常用在肯定句中,例 …
1、用于 a lot of (=lots of)，意为“许多”，可用于修饰可数或不可数名词。 如： We need a lot of [lots of] money. 我们需要很多钱。 He has quite a lot of …
A lot of and lots of can both be used with plural countable nouns and with singular uncountable nouns for affirmatives, negatives, and …
We use a lot of or lots of with both countable and uncountable nouns. There was a lot of rain last week. [rain = uncountable] There were a …
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