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人教版高中英语必修三《Space Exploration》SectionC PPT课件,共36页。重点词汇1.Astronauts’ bones and muscles can get very weak in space due to the lack of gravity,so they need to exercise every day,which will help them stay healthy.在太空中,宇航员的骨骼和肌肉会由于缺乏重力而变得非常脆弱,所以他们每天都需要锻炼,这会帮助他们保持身体健康。【词汇精讲】句中的lack是名词,意为“缺乏”;lack还可作动词,意为“没有;缺乏”。Despite his lack of experience,he got the job.他虽然经验不足,但还是获得了这份工作。We lacked concentration and it cost us the goal and the game.我们注意力不够集中,结果丢了球,输了比赛。Certain vital information is lacking in the report.该报告缺少某些关键信息。2.Astronauts have to use tape to stick everything down while working in space because everything would float off otherwise.宇航员在太空工作时必须用胶带把所有的东西都粘住,不然的话一切都会飘走。【词汇精讲】句中otherwise是副词,意为“否则,要不然”。其用作副词,还有下列意义:①“另外;别样”,相当于differently或in another way;②“相反地”,相当于in the other way或on the contrary;③“在其他方面;除此之外”,相当于in other or different ways。otherwise还可用作连词,意思为“否则;要不然”,相当于or,or else或if not。We’re committed to the project.We wouldn’t be here otherwise.我们是全心全意投入这项工作的,否则我们就不会到这里来了。You will have to go now;otherwise you’ll miss your bus.你现在得走了,否则赶不上公交车了。3.Sending people to other planets or even beyond the solar system is not an easy goal to achieve.将人类送往其他行星甚至太阳系之外并不是一个容易实现的目标。【词汇精讲】beyond是介词,具体用法如下:(1)后接表示空间的名词,意思是“在……那一边,在……之外”。如:He is from a village beyond the mountain.他来自山那边的一个村庄。The airport is around 30 miles beyond the city.机场离城市大约30英里。重点语法动词不定式作定语和状语一、动词不定式作定语不定式作定语通常放在其修饰的名词或代词之后,和被修饰的名词或代词之间是主谓关系、动宾关系、同位关系或修饰关系等。1.主谓关系The future to greet us will be bright.我们的未来会十分美好的。He is always the first person to come and the last one to leave.他总是第一个来,最后一个离开。2.动宾关系On Sundays,he always has a lot of letters to write.星期天,他总是有许多信要写。The teacher left us a lot of problems to solve.老师给我们留了许多道题要解答。He can find no one to make friends with.他找不到可交朋友的人。注意:由于动词不定式与其修饰的词之间往往有动宾关系,因此,如果该不定式是不及物动词,其后应有必要的介词。There is nothing to worry about.没什么可担心的。Brown has something important to deal with at present.目前布朗有重要的事情要处理。... ... ...关键词:Space Exploration PPT课件免费下载,.PPT格式; 本作品中主体文字及图片可替换修改,文字修改可直接点击文本框进行编辑,图片更改可选中图片后单击鼠标右键选择更换图片,也可根据自身需求增加和删除作品中的内容,源文件无水印。如认为该内容涉嫌侵权,可通过邮件提出书面通知,我们将及时处理。