冀教版九年级英语上册《Science Affects Us》Look into Science课件.pptx

Lesson30ScienceAffectsUs;Haveyoueverdoneanyinterestingexperiments?

Canyoudescribeoneofthem?;Readthepassageandwritetrue(T)orfalse(F).

1.Brian,DannyandJennydidanexperimentatJenny’shome.()

2.JennyandWangMeiboththinkscienceisinteresting.()

3.WangMeithinkscomputerswillchangetheworld.()

4.JennyenjoyedlearningaboutDNA.();Readthefirste-mailandfinish.

1.HowdoesJennydotheexperiment?

First,getajar________waterandapieceofcardboard._____thejar______thecardboardand_____thejar_____.Next,______yourhand_____.;2.Whatcanwediscoverfromtheexperiment?

Theairpressure___________onthecardboardishigherthan____ofthewater___________frominsidethejar.

Thehigherairpressureoutsidethejar_____thecardboard_________.;Readtheseconde-mailandfinish.

Science______people’severydaylives.Withoutthescientific____________(develop)ofrecentyears,ourliveswouldbeverydifferent.Canyouimaginelifewithoutcomputersor_____________?Scientific__________aremakingourlivesbetterandbetter.DNAisreallyoneofthemostamazing______(thing)ontheearth.Manypeoplethinkitwill______theworld.;;;2.Theairpressurepushinguponthecardboardishigherthanthatofthewaterpushingdownfrominsidethejar.

向上推纸板的气压要比罐子里向下推的水的气压高。

that用来替代前面提到的不可数名词或单数可数名词，以避免重复。

Thepriceofriceislowerthanthat(theprice)ofmeat.

米的价格比肉的价格低。

Theweatherhereismuchhotterthanthatinmycity.

这里的天气比我们城市的天气热太多。;3.Scientificdiscoveriesaremakingourlivesbetterandbetter.科学发现正在让我们的生活变得越来越好。

（1）discovery可数名词，意为“发现，发觉”，其复数形式为discoveries。其动词为discover，后跟名词、代词或宾语从句。

Thisisanimportantdiscovery.这是一个重要的发现。

Theyhavediscoveredoursecrets.

他们已经发现了我们的秘密。;（2）betterandbetter“越来越好”，其构成为“比较级+and+比较级”，意为“越来越……”。当比较级用more构成时，要用结构“moreandmore+形容词/副词原级”。

Theweatherisgettingcolderandcolder.

天气变得越来越冷。

Ihopemyvilla