quite a lot是固定短语吗

是固定短语，表示相当多的，例如：

1、He pulls in quite a lot as a milkman.他卖牛奶赚了相当多的钱。

2、I play tennis quite a lot in the summer.我夏天常打网球。

3、Considering he's only just started， he knows quite a lot about it.鉴于他才刚刚开始，他懂得的已经不少了。