2018屆高考英語第一輪語法大全復習教案及配套練習2
1） 規則變化
單音節詞和少數雙音節詞，加詞尾-er，-est來構成比較級和最高級。
構成法 原級 比較級 最高級
一般單音節詞未尾加-er,-est tall taller tallest
以不發音的e結尾的單音詞和少數以- le結尾的雙音節詞只加-r,-st nice nicer nicest
以一個輔音字母結尾的閉音節單音節詞，雙寫結尾的輔音字母，再加-er,-est big bigger biggest
\"以輔音字母+y\"結尾的雙音節詞，改y為i，再加-er，-est busy busier busiest
少數以-er,-ow結尾的雙音節詞未尾加-er,-est clever/narrow cleverer/ narrower cleverest/ narrowest
其他雙音節詞和多音節詞，在前面加more，most來構成比較級和最高級 important/ easily more important/ more easily most important/ most easily
2） 不規則變化
原級 比較級 最高級
good better best
well（健康的） worse worst
bad
ill（有病的）
old older/elder oldest/eldest
much/many more most
little less least
far farther/further farthest/furthest
4.8. as + 形容詞或副詞原級 + as
1）在否定句或疑問句中可用so… as。例如：
he cannot run so/as fast as you. 他沒你跑得快。
2）當as… as 中間有名詞時采用以下格式：as +形容詞+ a +單數名詞/ as + many/much +名詞。例如：
this is as good an example as the other is. 這個例子和另外一個一樣好。
i can carry as much paper as you can. 你能搬多少紙，我也能。
3）用表示倍數的詞或其他程度副詞做修飾語時，放在as的前面。例如：
this room is twice as big as that one. 這房間的面積是那間的兩倍。
your room is the same size as mine. 你的房間和我的一樣大。
4）倍數+ as + adj. + as <=> 倍數+ the … + of。例如：
this bridge is three times as long as that one. 這座橋的長度是那座的三倍。
this bridge is three times the length of that one.
your room is twice as large as mine. 你的房間是我的兩倍大。
your room is twice the size of mine.
4.9 比較級形容詞或副詞 + than 。
如：you are taller than i. 你比我高。
they lights in your room are brighter than those in mine.你房間的那些燈比我房間里的亮。
注意：
1）要避免重復使用比較級。
（錯） he is more cleverer than his brother.
（對） he is more clever than his brother.
（對） he is clever than his brother.
2）要避免將主語含在比較對象中。
（錯） china is larger than any country in asia.
（對） china is larger than any other countries in asia.
3）要注意對應句型，遵循前后一致的原則。
the population of shanghai is larger than that of beijing.
it is easier to make a plan than to carry it out.
4）要注意定冠詞在比較級中的使用。
比較：which is larger, canada or australia?
which is the larger country, canada or australia?
she is taller than her two sisters.