哪些单词比较级用more，哪些加er？ 比较级即可加er又可加more的单词有哪些
\u54ea\u4e9b\u5355\u8bcd\u6bd4\u8f83\u7ea7\u7528more\uff0c\u54ea\u4e9b\u52a0er\u4e00\u822c\u8f83\u77ed\u7684\u7528er[4],\u957f\u7684\u7528more[\u30094],\u7279\u6b8a\u7684\u5f88\u5c11
\u53cc\u97f3\u8282\u5f62\u5bb9\u8bcd\u7684\u6bd4\u8f83\u7ea7\u53ef\u4ee5\u7528er\u6216more,\u4f46\u4ee5y\u7ed3\u5c3e\u548c\u4ee5ow\u7ed3\u5c3e\u7684\u53cc\u97f3\u8282\u5f62\u5bb9\u8bcd\u591a\u534a\u7528er
e.g.tender tenderer more tender
clever cleverer more clever
happy happier
narrow narrower
（1）单音节词
如：small→smaller→smallest short→shorter→shortest
tall→taller→tallest great→greater→greatest
（2）双音节词
如：clever→cleverer→cleverest narrow→narrower→narrowest
2．以不发音e结尾的单音节词，比较在原级后加-r，最高级在原级后加-st；
如：large→larger→largest nice→nicer→nicest able→abler→ablest
3．在重读闭音节（即：辅音＋元音＋辅音）中，先双写末尾的辅音字母，比较级加-er，最高级加-est；
如：big→bigger→biggest hot→hotter→hottest fat→fatter→fattest
4．以“辅音字母＋y”结尾的双音节词， 把y改为i，比较级加-er，最高级加-est；
如：easy→easier→easiest heavy→heavier→heaviest
busy→busier→busiest happy→happier→happiest
5．其他双音节词和多音节词，比较级在前面加more，最高级在前面加most；
如：beautiful→more beautiful→most beautiful
different→more different→most different
easily→more easily→most easily
有少数形容词、副词的比较级和最高级是不规则的，必须熟记。
如：good→better→best well→better→best
bad→worse→worst ill→worse→worst
old→older/elder→oldest/eldest
many/much→more→most little→less→least
far →further/farther→ furthest/farthest
一般说来，元音可以构成音节，辅音不响亮，不能构成音节。但英语辅音字母中有 4 个辅音[m]，[n]，[ng]，[l]是响音，它们和辅音音素结合，也可构成音节。它们构成的音节往往出现在词尾，一般是非重读音节。英语的词有一个音节的，两个音节的，多个音节的，一个音节叫单音节，两个音节叫双音节，三个音节以上叫多音节。
元音字母是26个字母中的a e i o u
单元音：
[i:] [i] [e] [ae] [a:] [۸]
[ə:] [ə] [u:] [u] [כ] [:כ]
双元音：
[ai] [ei] [iə] [əu] [uə] [au] [eə] [כi]
比较级的构成规则
1．一般单音节词和少数以-er,-ow结尾的双音节词,比较级在后面加-er,最高级在后面加-est；
（1）单音节词
如：small→smaller→smallest
short→shorter→shortest
tall→taller→tallest
great→greater→greatest
（2）双音节词
如：clever→cleverer→cleverest
narrow→narrower→narrowest
2．以不发音e结尾的单音节词,比较在原级后加-r,最高级在原级后加-st；
如：large→larger→largest
nice→nicer→nicest
able→abler→ablest
3．在重读闭音节（即：辅音＋元音＋辅音）中,先双写末尾的辅音字母,比较级加-er,最高级加-est；
如：big→bigger→biggest
hot→hotter→hottest
fat→fatter→fattest
4．以“辅音字母＋y”结尾的双音节词,把y改为i,比较级加-er,最高级加-est；
如：easy→easier→easiest
heavy→heavier→heaviest
busy→busier→busiest
happy→happier→happiest
5．其他双音节词和多音节词,比较级在前面加more,最高级在前面加most；
如：beautiful→more
beautiful→most
beautiful
different→more
different→most
different
easily→more
easily→most
easily
注意：（1）形容词最高级前通常必须用定冠词
the,副词最高级前可不用.
例句：The
Sahara
is
the
biggest
desert
in
the
world.
（2）
形容词most前面没有the,不表示最高级的含义,只表示"非常".
It
is
a
most
important
problem.
=It
is
a
very
important
problem.
6．有少数形容词、副词的比较级和最高级是不规则的,必须熟记.
如：good→better→best
well→better→best
bad→worse→worst
ill→worse→worst
old→older/elder→oldest/eldest
many/much→more→most
little→less→least
far
→further/farther→
furthest/farthest
一般较短的用er[4],长的用more[〉4],特殊的很少
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