高中語法專練：v. what從句作主語

v. what從句作主語

1. 一般來說，按照語法一致原則，謂語動(dòng)詞要用單數(shù)形式。

What he said is true.

他說的話是真的。

What's needed is act.

所需的是行動(dòng)。

2. what從句作主語，有時(shí)候主句的謂語動(dòng)詞be與表語的數(shù)保持一致。如果主句的表語是復(fù)數(shù)，主句謂語動(dòng)詞用復(fù)數(shù)，主句的表語是單數(shù)，謂語動(dòng)詞就用單數(shù)形式。

What they want are books .

他們想要的是書本。

What they want is money.

他們想要的是錢。

What he wants to see is your manager.

他想見的人是你們經(jīng)理。

專項(xiàng)練習(xí)

1. What we lack today _______ steel and concrete.

A. was

B. were

C. are

D. is

2. What they have done _______ useful to the people.

A. are considered

B. is considered

C. have been considered

D. will be considered

3. What the man said under the oath _______ by several other witnesses.

A. was disputed

B. were disputed

C. disputed

D. be disputed

4. What I'm in need of _______ money.

A. is

B. are

C. was

D. were

5. What he wants to get _______ some books.

A. is

B. are

C. was

D. were

答案速查　1-5　CBAAB