题目内容
18.Our school library is on thefifth(five) floor.There are many kinds of books in it.分析 我们学校图书馆在五楼,有很多种书在里面.
解答 答案:fifth.结合句意这里是要表达在几楼,结合the可知用序数词,five是基数词五,序数词是fifth.故答案是fifth.
点评 一、二、三,单独记;八去t,九除e,ve要用f替,整十基数变序数,先把ty变成tie;要是遇到两位数,十位基数个位序,th最后加上去.
解析口诀:one→first,two→second,three→third这三个词变化特殊,要单独记;eight→eighth,nine→ninth,八去t,九去e后再加-th; five→fifth,twelve→twelfth,五、十二把ve换成f再加-th;twenty→twentieth,thirty→thirtieth…整十先把词尾y改为ie再加-th.两位数时则十位数用基数词,个位数用序数词,如:twenty-first.
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