八年級英語上冊形容詞和副詞的比較級課件人教新目標(biāo)版

1、形容詞和副詞的比較級形容詞和副詞的比較級的含義大多數(shù)形容詞和副詞有三個(gè)等級：原級、比較級和最高級。期中比較級表示“更”,用于兩者（人或事物）之間的比較，說明“前者比后者更”,比較級前常用even, much, a lot ,等修飾，比較級的句子中常含有than.形容詞和副詞的比較級的構(gòu)成 （一）規(guī)則變化1，單音節(jié)和部分雙音節(jié)形容詞或副詞一般在詞尾加 -er。 smart-smarter fast-faster high-higher small-smaller形容詞和副詞的比較級的構(gòu)成2， 以不發(fā)音的字母e結(jié)尾的，直接加-r.nice-nicer fine-finer3，以“輔音字母結(jié)尾的”，

2、把變，再加-er。early-earlier happy-happiereasy-easier heavy-heavier形容詞和副詞的比較級的構(gòu)成4，以重讀閉音節(jié)結(jié)尾的單詞，如果末尾只有一個(gè)輔音字母，先雙寫這個(gè)字母，再加-erbig-bigger thin-thinnerhot-hotter形容詞和副詞的比較級的構(gòu)成5,多音節(jié)和部分雙音節(jié)形容詞或副詞在原級前加more。popular-more populardifficult-more difficultbeautiful-more beautiful形容詞和副詞的比較級的構(gòu)成6，由“動詞+后綴-ing / -ed ”構(gòu)成的形容詞，在詞前加

3、eresting-more interestingexciting-more excitingbored-more boredrelaxed-more relaxed形容詞和副詞的比較級的構(gòu)成7,由形容詞+后綴 -ly 構(gòu)成的副詞，在該副詞前加more.slowly-more slowlyhappily-more happilydifferently-more differently(二)不規(guī)則變化部分不規(guī)則形容詞或副詞good/well-betterbad / ill / badly-worsemany /much-morelittle-lessfar-farther/fur

4、therold-older/elder形容詞或副詞比較級的用法1，形容詞或副詞的比較級常用于兩者之間比較，表示兩者之間的差異，構(gòu)成多為“主語+謂語(連系動詞)+形容詞或副詞的比較級+than+比較對象”。eg. His pen is bigger than mine. This sweater is too big, do you have a smaller one ? He jumped higher than you.形容詞或副詞比較級的用法2,形容詞的比較級可以有much,a little ,even, far 等表示程度的詞來修飾，用以加強(qiáng)語氣。You look a little t

5、hinner than last year.Your sister looks much taller than before.形容詞或副詞比較級的用法3,“比較級+and+比較級”或“more and more + 原級（多音節(jié)或部分雙音節(jié)詞）”意為“越來越.”。My brother is taller and taller.Our city is becoming more and more beautiful.He is running more and more slowly.形容詞或副詞比較級的用法4,“the + 比較級+句子，the +比較級+句子”意為“越.,就越.”.The

6、more you read,the more you know.The more vegetables you eat,the healthier you will be.形容詞或副詞比較級的用法5,as.as.意為“與.一樣.”否定形式“not as /so.as.”意為“不如., ”，或“與.不一樣.”, 也是一種表達(dá)比較的形式，相當(dāng)于“l(fā)ess+形容詞/副詞+than”.但as/so.as中間用形容詞或副詞的原級。This room is as big as that one.This room is not as/so big as that one.This room is smal

7、ler than that one.形容詞或副詞比較級的用法6,“the +比較級+of the two”表示“兩個(gè)中比較.的”。The blue sweater is the cheaper of the two.這件藍(lán)色的毛衣是兩個(gè)中比較便宜的。The little boy is the taller of the two.形容詞或副詞比較級的用法7,“比較級+than any other+單數(shù)名詞”表示“比任何其他的.都.”.Tom is taller than any other boy in his class.Tom比他們班里其他任何一個(gè)男孩都高。The red ball is bigger than any other ball in the box.形容詞或副詞比較級的用法8, “Which / Who is +比較級 ，A or B ? ”A和B中哪一個(gè)/誰更.Which is bigger ,the sun or the moon?Who is more beautiful , Lily or Lucy?形容詞或副詞比較級的用法9,表示“大幾歲”、“長幾米”之類的比較級時(shí)，用 “數(shù)量+比較級+than”