八下Unit7知識(shí)點(diǎn)

1、八下 Unit7 知識(shí)要點(diǎn)八年級(jí)下 Unit7 知識(shí)點(diǎn)【學(xué)一學(xué)】1t s 8,844 meters hig它有8,844米高。It is meters /kolimeters /square kilometers + high (long, wide )+(in size ).它米咼(長，寬)。有多長(寬，咼 )”時(shí)，將數(shù)詞和數(shù)量單位放在表示長寬高的形容詞前【做一做】1. The table is two meters (long) and one meter (_wide)2. -How long is the bridge ?-It s 1,000 meters .A. the longe

2、st B. longer C. longest D. long【學(xué)一學(xué)】 2.China has the biggest population in the world . Population 是集合名詞，無復(fù)數(shù)形式，在句中作主語時(shí)，指一個(gè)整體，謂語動(dòng)詞用單數(shù)。 The population today is growing very fast . .表示某一范圍內(nèi)有多少人口時(shí)，用 ” have/has a population of +數(shù)字” India has a population of 1 billion . 問某地有多少人口時(shí)，用 What is /was the populat

3、ion of 或 How large is / was the population of ？ 表示人口多少時(shí)，用large /small ,而不能用 many /more /few等?！咀鲆蛔觥? is the population of our city ?- So rry , I dont know .A. How B. What C. How many D. How much2.China a population of 13 billion .A. have B. has C. is D. are【學(xué)一學(xué)】 3.China has a much longer history than

4、 the US .一些副詞可以位于形容詞，副詞比較級(jí)之前表示比較的程度，如 ; far , much , even ,a lot , a little , a bit 等。【做一做】1. This shirt is than the one on the desk .A. much more beautiful B. a lot of beautifulC. more far beautiful D. beautiful2.I study hard this term , but Jenny studies much .A. hard B. harder C. hardest D. the h

5、ardest【學(xué)一學(xué)】 4.one of the + 形容詞最高級(jí) +復(fù)數(shù)名詞【做一做】1.One of (dangerous) sports is mountain climbing .2. Alex is one of my good ( friend ).【學(xué)一學(xué)】 5.It is very hard to take in air as you get near the top=To do sth is hard . It s + adj.(+ for sb.)+to do sth.常用的形容詞有 hard、difficult 、 possible、important、useful 等【

6、做一做】1.It is important for us (learn ) English well.2.It s good fresh aitrhien morning .A. to take in B. have in C. to take turns D. give in【學(xué)一學(xué)】6、Feel free to do sth按照自己的意愿做某事【做一做】Please feel free ( ask ) me any question in class .【學(xué)一學(xué)】 7、形容詞和副詞的比較級(jí)和最高級(jí)1. 大多數(shù)形容詞有三個(gè)級(jí)。1) 原級(jí)：常用結(jié)構(gòu)as . as.像.一樣否定；not as /

7、 so asZhang Hong is as tall as Tom.2) 比較級(jí) (用于兩者之間的比較 ) 常用結(jié)構(gòu)：形容詞比較級(jí) than .He is taller than I.3) 最高級(jí)(用于三者或三者以上的比較 )，常用結(jié)構(gòu) ：the + 形容詞的最高級(jí) of / in .He is the tallest of the three.He is the funniest in his class.2. 形容詞、副詞比較級(jí)和最高規(guī)則變化和不規(guī)則變化。 規(guī)則變化 ：1) 一般情況下，單音節(jié)或雙音節(jié)的形容詞 (或副詞)比較級(jí) er ， 最高級(jí) estcleverclevererclev

8、erestfewfewerfewest2) 以e結(jié)尾的詞，比較級(jí)+ r,最高級(jí)+ st即可。女口：nicenicernicest cutecutercutestlargelargerlargest3) 以輔音字母+ y結(jié)尾的變y為i + er或esteasyeasiereasiesthappyhappierhappiest4) .雙寫最后一個(gè)輔音字母+ er或est的詞,fatfatterfattestthinthinnerthinnest hothotterhottest5) 多音節(jié)和部分雙音節(jié)的詞需要在形容詞原級(jí)前+ more構(gòu)成比較級(jí)，+ the most構(gòu)成最高級(jí)。beautiful more beautiful the most beautiful又如 : delicious, popular, important, interesting, expensive, creative 雙音節(jié)的詞如 :careful more careful the most careful useful more useful the most useful 少數(shù)單音節(jié)詞也是這樣，如：pleased more pleased the most pleased tired more tired the most tired b） 不規(guī)則變化：good /well bet