2018-2019学年英语人教版必修3学案:Unit 4 Section Ⅱ Warming Up Reading Language Points Word版含解析
2018-2019学年英语人教版必修3学案:Unit 4 Section Ⅱ Warming Up Reading Language Points Word版含解析第4页

  它们最终产生了二氧化碳、氮气、水蒸气和其他气体,从而形成了地球的大气层。

  in time 及时;终于;迟早

  (1)in time作"终于;迟早"讲时,常单独使用,作状语。

  (2)in time作"及时"讲时,后常跟for sth.或to do sth.。

  ①You will succeed in time as long as you don't give up.

  只要不放弃,你总有一天会成功。

  ②The doctor came in time to_save (save) his life.

  医生及时赶到并抢救了他的生命。

  ③Lucky for him, he was just in time for the bus.

  幸运的是,他及时赶上了公共汽车。

  [联想发散] time 相关短语荟萃:

  ①from time to time  有时;偶尔

  ②at a time 每次

  ③in no time 立刻;马上

  ④at the same time 同时

  ⑤at one time 一度;从前

  ⑥at no time 绝不(置于句首时,句子常用部分倒装语序)

  3.(教材P26)What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.

  很多科学家相信,由于地球上长期有水存在,使地球得以把有害气体和酸性物质溶解在海洋里。

  harmful adj.有害的

  (1)be harmful to ...        对......有害

  (2)harm n.& vt. 伤害;损害

  do harm to sb.= do sb.harm 对某人有害

  (3)harmless adj. 无害的

  ①Your smoking can be harmful to the health of your children.

  你吸烟会对孩子的健康有害。

  ②We all know that drinking too much does_harm_to your health.

  众所周知,过量饮酒对你的身体有害。

  ③The medicine is harmful to children but harmless (harm) to adults.

这种药对儿童有害,却对成年人没有什么害处。