考點(diǎn)二：序數(shù)詞。提醒：ninth, twelfth, twentieth。

　�、傩驍�(shù)詞表日期、樓層，世紀(jì)、生日、順序。

　　1. Tom is busy preparing for a party to celebrate his sister’s _________ (twelve) birthday. (玄武)

　　2. —How was your day off yesterday? (江寧)

　　—Perfect! It was my grandma’s ________(eighty)birthday. We had a big cake.

　�、�“a+序數(shù)詞”表示“又一，再一”，強(qiáng)調(diào)動(dòng)作的反復(fù)性。

　　③序數(shù)詞后跟形容詞的最高級(jí)

　�、苄驍�(shù)詞后跟動(dòng)詞不定式

　　考點(diǎn)三：分?jǐn)?shù)表達(dá)

　　分子用基數(shù)詞，分母用序數(shù)詞;分子超過一，分母加-s。

　　A recent scientific report says three________ (eight) of the school students suffer from

　　sub-health(亞健康). (白下)

　　考點(diǎn)四：百分?jǐn)?shù)表達(dá)。50 percent of the students

　　百分?jǐn)?shù)和分?jǐn)?shù)作主語，謂語動(dòng)詞跟后面的名詞保持一致。

　　Two thirds of the students in our class ______ money to the poor girl recently. (玄武一模)

　　A.have raised B.has raised C.have donated D.has donated

　　考點(diǎn)五：有關(guān)詞組

　　in the 1870s, in one’s thirties, nine in/out of ten

　　Though he's in his ________(六十幾歲)，he's energetic enough to go round. (高淳)

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