Unit8

HaveyoureadTreasureIslandyet?;Haveyouseenthismovieyet?;Duringhismission(任务）toMars,hewasleftonMarsaloneafteraterriblestorm.;Tosurvive(生存）there,heusedhisknowledgetomakewaterandoxygen（氧气).Healsogrowenoughpotatoestoeatsuccessfully.;Healsotriedhisbesttocontact(联络)NASA(美国航天局)atthesametime.;Henevergaveup.Intheend,hewassavedandhegothome.;Readthepassageandanswerthefollowingquestions.;Readthepassageagain.Findwordsthathavethesemeanings.;;;Retellthepassage;Retellthepassage;规则变化

1)一般情况下，单音节或双音节的形容词/副词比较级＋er，最高级＋est。如:

clever—cleverer—cleverest

few—fewer—fewest

small—smaller—smallest等。;2)以e结尾的词，比较级＋r，最高级＋st即可。如：

nice—nicer—nicest

cute—cuter—cutest

large—larger—largest

3)以辅音字母＋y结尾的变y为i＋er或est

如:easy—easier—easiest

happy—happier—happiest

再如：early,busy,heavy,dirty,lazy也如此。;4)重读闭音节，单辅音结尾的，双写这个辅音字母＋er或est的词：

①fat—fatter—fattest

②thin—thinner—thinnest

③hot—hotter—hottest

④red—redder—reddest

⑤wet—wetter—wettest

⑥big—bigger—biggest;5)多音节和部分双音节的词需要在形容词

原级前＋more构成比较级，＋themost构

成最高级。如：

beautiful－morebeautiful－themostbeautiful

又如:delicious,popular,important,interesting,expensive,creative

双音节的词如:

careful－morecareful－themostcareful

useful－moreuseful－themostuseful;Fillintheblankswiththecorrectformsofthewordsinthebox.;3.Nooceanintheworldisas_____as thePacificOcean.

4.AlthoughJapanis_______than Canada,itis_______smaller.;Writetwocomparisonsabouttwotopics.Writetruefacts.;Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.;Exercise