Unit 13 We are trying to save the earth
知识点及练习 Section A 知识点 1
试图，努力，尝试 用法：try to do sth
尽力做某事 try doing sth
尝试做某事 try one's best (to do sth
) = do one's best (to do sth
) 尽某人最大的努力(做某事) 短语：try on 试穿 try out 试用，参加选拔 have a try 尝试，试一下 let me try 让我试一下 2
the earth 地球，表示世界上独一无二的事物前面要加定冠词the
短语：on the earth 在地球上 on earth 究竟，到底 3
pollution n
污染，污染物 →pollute v
污染→ polluted adj
被污染的 短语：air pollution 大气污染，空气污染 noise pollution 噪音污染 water pollution 水污染 4
litter v
垃圾= rubbish = trash 短语：take out the rubbish 倒垃圾 throw rubbish / litter 扔垃圾 5
the bottom of… …的底部 the top of … …的顶部 6
be full of = be filled with 充满…… 7
play a part 参与…；起作用 play a part in “在…方面起作用；参与…”，后接名词、代词或动词-ing 形式
cut 短语 cut down 减少，把……砍倒 cut in 插话 cut off 切断；断绝 cut up 切碎 cut out 删除 9
instead of 介词短
