do/does的用法：

Question

如题所述

Answer 1

最佳答案检举
do
这个词（does是第三人称单数形式），大体上从两方面来讲。
1.作为行为动词，跟其他动词一样，如study,
play等。他的意思是“做”等。如：
we
usually
do
our
homework
in
the
afternoon.
he
does
his
homework
in
the
evening.
2.作为助动词，也就是帮助主要动词构成否定和疑问等。
we
don't
like
bananas.
do
you
like
apples?
does
he
like
english?
he
doesn't
like
swimming.
上面有一句he
does
his
homework
in
the
evening.要是变成否定句就成了这个样子：
he
doesn't
do
his
homework
in
the
evening.
这里加上了助动词doesn't，而原来的主动词does变成原形do了。

Answer 2

例如：
How
often
do
you
do
exercises?
Once
a
week.
How
often
does
he/she
do
exercises?
Once
a
week.
often
后面的do/does是助动词，exercises前边的do是实意动词“做”
足够明白吗？

Answer 3

Answer 4