高中英语

a bit of/a little 都能修饰不可数名词
a lot of=lots of 修饰名词，表示许多
a few 修饰可数名词，表肯定
a lot很多,十分,只能修饰动词或形容词
a bit/a little只能修饰动词或形容词,表示有一点
a lot 非常多

A lot of [Lots of] work has been done by her since yesterday.
昨天以来她己做了大量的工作。
They saw a lot of her last month.
上个月他们常常看见她。
She laughed a lot.
她笑得很厉害。
I like him quite a lot.
我非常喜欢他。
Thanks a lot.
多谢。
Get away, the whole lot of you!
你们统统走开!
a little
少量, 少许

Small in size:
狭小的：尺寸小的：
a little dining room.See Synonyms at small
一间小饭厅参见 small
Short in extent or duration; brief:
短：限度或期限短；简短：
There is little time left.
只有很短的时间了
Small in quantity or degree:
少：数量或程度小：
little money.
一点儿钱
Unimportant; trivial:
小的：不重要的；琐碎的：
a little matter.
小事
Narrow; petty:
狭隘的：小气的；心地狭窄的：
mean little comments; a little mind consumed with trivia.
恶意而狭隘的评论；为琐事而耗费的狭隘心胸
Without much power or influence; of minor status.
卑微的：没有多少权力或影响的；地位低下的
Being at an early stage of growth; young:
幼小的：处于成长初级阶段的；年轻的：
a little child.
一个小孩

a bit
To a small degree; somewhat:
稍微；有点：

a bit of
一点