【初一英語語法】初中英語語法知識點(3)

　　4、形容詞的級

　　我們在對兩個或以上的人或物進(jìn)行對比時，則要使用比較或更高級形式。構(gòu)成如下：

　　一) 一般在詞后加er或est(如果是以e結(jié)尾則直接加r或st)。如：greater-greatest, shorter –shortest, taller –tallest, longer –longest, nicer- nicest, larger -largest

　　二)以重讀閉音節(jié)結(jié)尾且1個元音字母+1個輔音字母(字母組合除外，如few-fewer fewest)結(jié)尾的雙寫結(jié)尾的輔音再加er /est。如：big-bigger biggest, red-redder reddest, hot-hotter hottest

　　三) 以輔音字母+y結(jié)尾的變y為i加er/est。如：happy-happier happiest, sorry-sorrier sorriest, friendly-friendlier friendliest(more friendly most friendly), busy-busier busiest, easy-easier easiest

　　四)特殊情況：(兩好多壞，一少老遠(yuǎn))

　　good/well - better best many/much - more most bad/ill – worse worst

　　little- less least old- older/elder oldest/eldest far- farther/further farthest/furthest

　　5、數(shù)詞 (基變序，有規(guī)則;一、二、三，自己背;五、八、九、十二;其它后接th;y結(jié)尾，變?yōu)閕, eth跟上去。) first, second, third; fifth, eighth, ninth, twelfth; seventh, tenth, thirteenth, hundredth; twenty-twentieth, forty-fortieth, ninety-ninetieth

　　二、初一英語語法——句式

　　1.陳述句

　　肯定陳述句 a) This is a book. (be動詞)

　　b) He looks very young. (連系動詞)

　　c) I want a sweat like this. (實義動詞)

　　d) I can bring some things to school. (情態(tài)動詞)

　　e) There’s a computer on my desk. (There be結(jié)構(gòu))

　　否定陳述句 a) These aren’t their books. b) They don’t look nice.

　　c) Kate doesn’t go to No. 4 Middle School. d) Kate can’t find her doll.

　　e) There isn’t a cat here. (=There’s no cat here.)

　　2. 祈使句

　　肯定祈使句 a) Please go and ask the man. b) Let’s learn English!

　　c) Come in, please.

　　否定祈使句a) Don’t be late. b) Don’t hurry.