针对这个句子主语可用名词sports,exerciswww.rixia.cce、动名词短语doing
sports\d日夏养花网oing
exercies\playing
sports\playing
exercise及形式主语it来做，谓语经常用be
good
for
时态一般用：一般现在时
和一般将来时
时态不同侧重点不同，前者侧重一般事实后者侧重将来情况：
Sports
is
good
for
your
health.\Sports
will
be
good
for
your
health
Doing
sports
is
good
for
your
health.\Doing
sports
will
be
good
for
your
health.
Exercise
is
good
for
your
health.\Exercise
will
be
good
for
your
health.
Doing
exercise
is
good
for
your
health.\Doing
exercise
will
be
good
for
your
health.
It
is
good
for
your
health
to
do
sports.\It
will
be
good
for
ywww.rixia.ccour
health
to
do
sports.
It
is
good
for
your
health
to
do
exercise.\It
will
be
good
for
your
health
to
do
exercise.

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Health benefits

知道了么？

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