D．定語(yǔ)從句中謂語(yǔ)動(dòng)詞的形式必須跟先行詞的單、復(fù)數(shù)形式保持一致。如：

(1) The girl who is speaking on the stage is Zhang Li’s sister. 在臺(tái)上講話的那個(gè)女孩是張力的姐姐。

(2) The children that are playing games over there are from Hunan. 在那邊做游戲的孩子們是湖南人。(from www.hz123456.com)

注意：在“one of + 名詞復(fù)數(shù) + 定語(yǔ)從句”結(jié)構(gòu)中，定語(yǔ)從句的謂語(yǔ)動(dòng)詞一般用第三人稱(chēng)復(fù)數(shù)形式，但當(dāng)one前面有the, the very, the less, the only或形容詞最高級(jí)修飾時(shí)，定語(yǔ)從句的謂語(yǔ)動(dòng)詞一般用第三人稱(chēng)單數(shù)形式，如：

(1) Li Lei is one of the students who are good at English. 李蕾是英語(yǔ)學(xué)得好的學(xué)生之一。

(2) Alice is the only one of the girls that is from America. 艾利斯是唯一的一個(gè)來(lái)美國(guó)的女孩。

E．there be結(jié)構(gòu)中be動(dòng)詞的形式由緊接近be后面的名詞的形式所決定。如：

(1) There is a teacher and seventy students in the classroom. 教室里有一個(gè)老師和七十個(gè)學(xué)生。

(2) There are seventy students and a teacher in the classroom. 教室里有七十個(gè)學(xué)生和一個(gè)老師。

F．在某些虛擬語(yǔ)氣的句子中，無(wú)論主語(yǔ)是誰(shuí)，be動(dòng)詞總是為were的形式。如：

(1) If I were a bird, I would fly in the sky freely. 要是我是一只鳥(niǎo)，我將自由自在地在天空飛翔。

(2) If he were here, I would talk to him face to face. 如果他在這里，我將面對(duì)面地跟他談。

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