思馬得英語100個句子學(xué)英語語法（2）：關(guān)于名詞的數(shù)的注意點
<例句>
I bought two bottles of ink yesterday.
我昨天買了兩瓶墨水。
<語法分析>
單位名詞的數(shù)有單、復(fù)數(shù)的形式，如kind, sort, type, piece, cake, bottle和grain等單位名詞如與復(fù)數(shù)限定詞連用，一般要變成復(fù)數(shù)形式，of 后面的名詞多用單數(shù)形式，且不用冠詞。有些單位名詞如dozen, score, head等詞語復(fù)數(shù)限定詞連用，仍保留單數(shù)形式。但如表示一種不確定的復(fù)數(shù)時，用復(fù)數(shù)形式。有些單位名詞如pair, couple和ton等于復(fù)數(shù)限定詞連用時，可用單數(shù)也可用復(fù)數(shù)。this, that, another和every等單數(shù)限定詞一般只能與單數(shù)名詞連用，但復(fù)數(shù)名詞前有一個集體數(shù)詞，且被看作一個整體時，也可與this等單數(shù)限定詞連用。
<觸類旁通>
(1) I like that two kinds of apple.
我喜歡那兩種蘋果。
語法分析：單位名詞如與復(fù)數(shù)限定詞連用，一般要變成復(fù)數(shù)形式。
(2) The shop sells six kinds of hat.
這家商店出售六種帽子。
語法分析：of 后面的名詞多用單數(shù)形式。
(3) I went to the students reading-room yesterday.
我昨天去學(xué)生閱覽室了。
語法分析：名詞有時也可用復(fù)數(shù)作定語。
(4) He is a seven-year-old boy.
他是個七歲的男孩。
語法分析：數(shù)詞 + 名詞作定語，這個名詞一般保留單數(shù)形式。
(5) I go to see her every two weeks.
我每兩周去看望她一次。
語法分析：復(fù)數(shù)名詞前有一個集體數(shù)詞，且被看作一個整體時，也可與單數(shù)限定詞連用。
(6) Never make friends with such a person.
不要和這樣的人交朋友。
語法分析：有些名詞在某些習(xí)慣用法中，要用復(fù)數(shù)形式。
<鞏固練習(xí)>
1. She eat twn _____[piece] of bread.
2. There are three _____[grain] of rice on the table.
3. There are two _____[score] of birds in the forest.
4. She bought three _____[dozen] of balls last week.
5. I have been there _____[dozen] of times.
6. Wealth was calculated by _____[head] of cattle.
7. The old man is a _____[shoe] doctors there.
8. I saw two _____[man] doctors there.
9. She came up to shake _____[hand] with me.
10. He asked me to change _____[seat].
<參考答案>
1. pieces 2. grains 3. score 4. dozen 5. dozens 6. heads 7. shoe 8. men 9. hands 10. seats
