But none of them has been turned to stone yet! none of + 可数(三者或三者以上)或不可数,表示……都不 none of , neither of做主语时谓语动词用单数。 到目前为止,还没有学生通过考试。 So far, none of the students has passed that exam.
He has just bought a new house in the city, but ever since he moved in, he has had trouble with cars and their owners. ever since表示从那以后一直,语气比since强,在文中引导 时间状语从句。 主句:现在完成时 从句:一般过去时
Recite
He has just bought a new house in the city, but ever since he moved in, he has had trouble with cars and their owners. When he returns home at night, he always finds that someone has parked a car outside his gate.
have an effect (on sth.) 对……有效果
have no effect
无效果;没有作用
Sometimes when you take a common drug, you
may have a side effect.
有时当你服用一种普通药物时,可能会有副作用。
Because of this,