玩具：
toy, doll, kite, chess, card, ball
图形：
shape, circle, square, rectangle, triangle.
看病：
ill, sick, pale, stomachache, checkup, headache, tooth-ache, fever, medicine, sore throat, cough, pain, have a cold,
乐器：piano, guitar, violin.
时间频率：
always, usually, often, sometimes, seldom, never, every day, every week, every Sunday, once a week, every year.
基数词：
one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety, hundred, thousand, million.
序数词：
first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, twentieth, thirtieth.
货币、量度单位：
ton, money, yuan, dollar, cent, pound, kilometer, metre, kilo, change
方位：
in, on, under, behind, beside, in front of, near, near to, close to, between, far, far away from, left, right, into, outside, inside, up, down.
其他副词：
yet, still, hard, well (better, best), late, later, early, fast, slowly, quickly, really, suddenly, instead, soon, again, too, either, badly, across, about, ago, also, away, back, finally, first, here, there, just, only, maybe, more, most, next, over, quite, together, very.

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