17.There are sevencontinents(洲) in the world.

分析 世界上有七大洲.

解答 continents 考查名詞.根據(jù)所給的漢語提示"洲"和空前的數(shù)詞seven可知,此處應(yīng)用名詞復(fù)數(shù)形式,故填continents.

點(diǎn)評 名詞是中學(xué)英語的重要語法,解題時首先要根據(jù)語境和邏輯來推斷出空所需要的詞性,或者是根據(jù)句子結(jié)構(gòu)的需要來推斷詞性,然后根據(jù)所給的漢語提示寫出正確答案.

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