keep前面加to的用法
keep前面加toto keep 动词不定式
Its a constant struggle to try to keep them up to par.
要让他们达标，需要不断努力。
I managed to keep my parents in the dark about this.
我设法对父母瞒下了此事。
My family helps to keep me centred.
家人帮助我保持冷静。
I go swimming every day in order to keep fit.
我每天游泳以保持健康。
I said I\'d go just to keep him happy.
我说过我要去只是为了让他高兴。