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細分為以下情況：

下邊詳細講解此表。

1.一般地，“n₁+of+n₂”作主語時的主謂一致，分為兩種情況：①當“a+n₁+of+n₂”作主語時，語義重心在右邊（n₂），根據n₂確定謂語的數。②但是，當“the+n₁+of+n₂”或“n₁復數+of+n₂”作主語時，語義重心移到左邊（n₁），根據n₁確定謂語的數。這是因為，把n₁由a變為the或復數，意在強調n₁，所以，語義重心由右邊（n₂）轉移到左邊（n₁）。

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

例句（number of）

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

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

  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（百分數+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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