at time偶爾,
E.G
1.One expects healthy children to be mischievous at times.
健康的孩子有時(shí)很調(diào)皮,這是意料之中的.
to time
沒(méi)聽(tīng)說(shuō)過(guò),from time to time,有時(shí),不時(shí),adv
on time
準(zhǔn)時(shí),
E.G
You should attend the meeting on time.你應(yīng)該準(zhǔn)時(shí)參加會(huì)議
in time及時(shí)
E.G
finish it in time ,及時(shí)完成