Asweallknow,about75percentoftheearth

來源：國語幫 1.31W

As we all know, about 75 percent of the earth_______covered by water.

A．is B．are C．am D．were

句意：我們都知道，地球的75%被水覆蓋。基數詞+percent of表示……的百分之幾十，由分數修飾的主語後面謂語動詞的數，和被修飾主語的單複數保持一致。earth表示單數含義，故*選A。

點睛：“half of, the rest of, most of, all of及百分數或分數+of 等後接名詞”作主語時，謂語動詞形式根據of後的名詞而定，例如：

Three fourths of the surface of the earth is covered with water.地球表面四分之三為水所覆蓋。

The rest of the lecture is wonderful. 講座的其餘部分精*極了。

50% of the students in our class are girls. 我們班50%的學生是女生。