例句： They put a screen around his bed so that the doctor could examine him.

例句： When my ship comes in, I'll move to a better apartment.

例句： School will begin next Tuesday.

例句： She had led a life of luxury and privilege.

例句： For certain reasons I will be unable to attend the meeting.

例句： It was advisable for you not to mention that.

例句： My brother is the black sheep of the family.

例句： He wondered darkly at how great a lag there was between his thinking and his actions

例句： You are just boasting about the effect of this new drug.

例句： His costly mistake resulted in severe loss.