to do=doing.比如To do morning exercise is good for your health=Doing morning execrise is good for your health.
to后面的是主语,it无实义,翻译的是后面的意思
to do=doing.比如To do morning exercise is good for your health=Doing morning execrise is good for your health.
to后面的是主语,it无实义,翻译的是后面的意思