第10讲 选择性必修一U1 relationships词句文精讲精练-2023高三英语一轮复习精品课程（北师大2019）

Unit 1 Relationships 一．核心词精讲： 1. The only thing I can remember from school maths is that the angles of a triangle add up to 180 degrees! add up to合计达，总计达 【拓展】 add to, add ... To add to增加，增添。 e.g. The newly-built bridge adds to the beauty of the city.  add ... to ... 往……里加……。 e.g. Do you want to add your name to the list? add up意为“（把……）加起来”。 e.g. The waiter can’t add up.这个服务员不会算账。 2. I remember that he let me pour some powder into the rocket and then another student lit a flame to set it off. set off意为：①出发，动身（与set out同义）；②燃放（鞭炮等），使……爆炸；③引发 e.g. When setting off / out on a long walk, you should wear suitable boots. 每次出发远行，都要穿合适的鞋子。 They set off fireworks and made speeches to mark the occasion. 他们燃放烟火和做演讲来纪念这个日子。 What he said on TV set off a live debate. 他在电视上的讲话引发了现场辩论。 3. And if what I do as a teacher can help turn a child like Graham into such a successful adult, then I know what I’m doing is worthwhile. worthwhile是形容词，意为“值得的，值得花费时间(或精力)的”，可作定语、宾语补足语或表语，常用于It is worthwhile doing / to do sth.结构。 e.g. We decided to give the money to a worthwhile cause. 我们决定将钱用于有益的事业上。 The smile on her face made it all worthwhile. 她脸上的笑容使一切都值得。 It is worthwhile continuing with the project. 我们觉得继续执行此方案是值得的。 I thought it was worthwhile to clarify the matter. 我觉得有必要澄清事情的真相。 4…. you were dragging your schoolbag behind you and looking bored.  If you drag something, you pull it along the ground, often with difficulty. (费力地) 拖 He got up and dragged his chair toward the table. 5. I had heard stories about your bad behaviour. 1）behavio(u)r [u]n. To get their Christmas presents, children are on their best behaviour. 2）behave v. She’s been behaving rather strangely. 她一直表现得颇为奇怪。 3） Behave yourself! 规矩点！ 4） a well-behaved/badly-behaved child 守规矩/不守规矩的孩子 6. Once I caught you and your friends seeing who could jump the farthest off the school stage! catch sb. doing => to discover suddenly and by surprise 1）. I