細(xì)分為以下情況：

下邊詳細(xì)講解此表。

1.一般地，“n₁+of+n₂”作主語時(shí)的主謂一致，分為兩種情況：①當(dāng)“a+n₁+of+n₂”作主語時(shí)，語義重心在右邊（n₂），根據(jù)n₂確定謂語的數(shù)。②但是，當(dāng)“the+n₁+of+n₂”或“n₁復(fù)數(shù)+of+n₂”作主語時(shí)，語義重心移到左邊（n₁），根據(jù)n₁確定謂語的數(shù)。這是因?yàn)椋��?/SPAN>n₁由a變?yōu)?/SPAN>the或復(fù)數(shù)，意在強(qiáng)調(diào)n₁，所以，語義重心由右邊（n₂）轉(zhuǎn)移到左邊（n₁）。

這些of短語有：①跟可數(shù)名詞的，如，a(n) number/average/group of。②跟不可數(shù)名詞的，如，a great deal of，a(n) bit/amount of。③跟可數(shù)或不可數(shù)名詞的，如，a kind/sort/type of，a quantity/ proportion/variety/plenty of，分?jǐn)?shù)/百分?jǐn)?shù)+of。

例句（number of）

A number of students help with the harvest.（a number of，許多的/大量的，謂語用復(fù)數(shù)。）

The number of students is increasing.（the number of，…的數(shù)量，謂語用單數(shù)。）

  例句（quantity of）

A large quantity of books have been bought.

A large quantity of beer was sold.

The quantity of books in the library is amazing.

The quantity of heat in the office has been increased.

Large quantities of wheat are being sent abroad.

例句（百分?jǐn)?shù)+of）

20 percent of the work was done yesterday.

20 percent of the students are absent today.

例句（其它）

A group of us have hired a boat for travelling.

A great deal of trouble lies before me.

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