,Unit9 This bird is bigger than the first one.,small,big,bigger,biggest,小的,大的,更大的,最大的,small,big,bigger,biggest,小的,大的,更大的,最大的,big,大的,small,小的,smaller,更小的,smallest,最小的,taller,short,tall,tallest,shorter,shortest,long,longer,longest,形容词的比较级 “-er”和最高级“est”,在形容词后面（adj）加上“er” 就变成形容词的比较级 在形容词后面（adj）加上“est” 就变成形容词的最高级。 有部分形容词要双写最后一个字母再加”er”或“est”。,small 小的,smaller 更小的,soft 轻声的,softer 更轻声的,loud 大声的,louder 更大声的,big 大的,bigger 更大的,原形,small 小的,smaller 更小的,tall 高的,taller 更高的,short 矮的,shorter 更矮的,big 大的,bigger 更大的,比较级,最高级,smallest 最小的,tallest 最高的,shortest 最矮的,biggest 最大的,big bigger biggest,small smaller smallest,tall taller tallest,short shorter shortest,long longer longest,A is er than B.,A,B,A 比 B 更,A is longer than B.,The second is bigger than the first .,A,B,B is bigger than A.,one,first,(1st),基数词变序数词,two,second,(2nd),three,third,(3rd),four,fourth,(4th),five,fifth,(5th),seven,eight,nine,tenth,ten,seventh,eighth,ninth,(7th),(8th),(9th),(10th),six,sixth,(6th),small,smaller,smallest,the first ball,the second ball,the third ball,is er than,long,longer,longest,A,B,C,C is the longest.,C 是最长的。,The second bird is bigger than the first bird.,The third bird is the biggest.,bird,big bigger biggest,small smaller smallest,tall taller tallest,short shorter shortest,long longer longest,small,smaller,biggest,smallest,tall,short,long,big,taller,shorter,smallest,tallest,shortest,longer,longest,