反义词或对应词：
tall---short , fat---- thin, cold---- hot , small-----big , black--white ,
cool---- warm , go--come , Yes----No , this----that , sit---stand up----down, on---under , father----mother , brother--- sister ,
动词的第三人称单数形式：
Play---plays, sleep---sleeps, swim---swims, skip---skips,
walk---walks , .like---likes, skate----skates, ride---rides ,
do---does, don’t---doesn’t go---goes ,watch--watches,4.fly---flies ,have--has,
动词的-ing形式（现在分词或动名词）：
A:Play---playing，walk--walking，fish---fishing, rain--raining,
snow---snowing, B:skate---skating，ride--riding,
C:swim---swimming, skip--skipping,
shop--shopping
名词复数形式：
pear--pears ,apple--apples,
banana--bananas,
orange--oranges,
noodle--noodles ;
lion---lions , bear---bears, elephant----elephants, tiger---tigers,
Monkey--monkeys, cat--cats, dog---dogs；
sweater---sweaters, shirt---shirts, T-shirt--T-shirts, trouser--trousers
Shoe---shoes hat--hats cap--caps
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