非谓语动词句子例句： I want this letter to be opened now. He feels it a duty to help the disabled in the community. Having been shown around the lab, we were taken to see the school library. His not coming made everyone present very disappointed. With the governments aid, those affected by the earthquake have moved to the new settlements. Having been told many times, he finally understood it.练习：1. 我父母总是鼓励我要相信自己。2. 为了赢得英语演讲比赛，他规定自己每天大声朗读一个小时的英语。（it ）3. 有人注意到有个小女孩经常自己坐公交车上学。（on ones own ）( 被动语态)4.Bill 建议开一个
