外研版高一英语必修一第五单元Module-5-A-lesson-in-a-LabPPT课件一等奖新名.pptxVIP

;Module5

ALessoninaLab;doinganexperiment;tongs;solid/liquid/gas;balance;1.(a)Waterexistsasasolid,aliquidandagas.

(b)Waterexistsasasolidandaliquidonly.

2.(a)Whenyouheatametal,itexpands.

(b)Whenyouheatametal,itcontracts.;3.(a)Steelisamixtureofironandothersubstances.

(b)Steelisamixtureofironandoxygen.

4.(a)Two-thirdsoftheearth’ssurfaceiswater.

(b)50%oftheearth’ssurfaceiswater.;5.(a)Thedistanceofthesunfromtheearthis25,5000kilometers.

(b)Thedistanceofthesunfromtheearthis150,500,500kilometers.

6.(a)Theearthis4.6millionyearsold.

(b)Theearthis4.6billionyearsold.;7.(a)Theearthistwiceaslargeasthemoon.

(b)Theearthisforty-ninetimes

largerthanthemoon.;Putthewordsinpairsorgroups.;Answerthesequestions.;3.Whichcanbeboth?

Electricityandsomemetals(alloysforexample)canbeman-madeandoccurnaturally.;1.Whenyouheatametal,itexpands.

expandvi.膨胀，扩张

Example:

1.Thepetalsofmanyflowers?expand?in

thesunshine.?

许多花旳花瓣在阳光中绽放。;反义词

contractvi.收缩n.协议

Example:

1.Theheat?contracted?thewoolensweeter.

高温让羊毛衣缩小了。

2.Imunder?contract?toteachhereforoneyear.?

我按照聘约要在这里教一年书。;2.Steelisamixtureofironandothersubstances.

mixturen.混合物

Example:

1.The?mixture?ofdrinksmademefeelbad.

mixv.混合mixAwithB;substancen.物质

Example:

1.Bewareofwhatyoudowiththisdangerous?substance.

你处理这些危险品时，可要当心。;Doexercises5and6onpage92.;Module5

ALessoninaLab;1.原级比较：两者程度相同。用句型as+

形容词/副词+as表达,否定名式为:not

as/so+形容词/副词as。;2.比较级：

A.表达A超出B。此时用形容词和副词旳比较级。;B.表达A不如B。句型：less+形容词

/副词原级。;3.形容词和副词比较级旳特殊使用方法

越来越……

比较级+and+比较级;B.越……，越……

the+比较级+the+比较级

Example:

1.Themorecarefulyouare,thebetteryouwilldointheexam.

2.Themoreyoupractice,themorefluently