冀教版高中英语选修7unit2globalwarming

冀教版高中英语选修7unit2globalwarming内容摘要：

as and oil after all. I expect to be here for a long time, and I need to be taken care of. discussion does the greenhouse effect develop? 2. What role do trees play in achieving our environmental balance ? Language points: 1. sb. be believed to be/do… It is believed that… It is reported that another manmade satellite has been put into orbit. believed /said /reported/considered/thought/ supposed/known/expected/announced/decided/ declared/understood / predicted预计 Another manmade satellite is reported to have been put into orbit. 2. …if not centuries. The flu is believed ___by viruses that like to reproduce in the cells inside the human nose and throat. be caused caused have caused If necessary, you can use my car. If in doubt, ask a policeman. If left untreated, his illness could result in blindness. if not / if any / if ever / if so I’ll go if you’re going If not, I’d rather stay at home.(要不 ) They knew they had to save the trees. If not, they would have no word at all. (不然 ) There are few people nowadays, if any, who remember him. She seldom, if ever, goes to the cinema. (几乎。 即使 … 也 ) 3. be released by… v/n 放开 ,释放。 免除 ,解除 She didn`t struggle , releasing her hands. … 没有透露 … The latest developments have just been released to the media. allow st。