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陷阱3  誤解名詞性物主代詞的單復數意義

名詞性物主代詞mine, yours, his, hers, its, ours, theirs等作主語時，謂語動詞的數取決于該動詞后面名詞的數，即動詞后面的名詞是單數形式，謂語動詞用單數形式；動詞后面名詞為復數形式，謂語動詞用復數形式。如：

His is a new bike. 他的是一輛舊自行車。

Ours are old bikes. 我們的是些新自行車。

陷阱4  誤解某些不定代詞的單復數意義

有些不定代詞，如all, some, none, most, any等，當它們用作主語時，若指復數概念，謂語動詞用復數形式；若指單數概念，則謂語動詞用單數形式。如：

Not all work is difficult. 不是所有的工作都難。

Not all the students are here. 不是所有的學生都在這兒。

【針對訓練】

選擇最佳答案填空：

1. Look! There ________ some apples in that tree.

A. is                       B. was                    C. are                     D. were

2. —There ________ a charity show this weekend. Would you like to join us?

—Of course. I’d love to.

A. is                       B. has                    C. will be               D. will have

3. —What is the weather like this summer here?

—There ________ very little rain.

A. has                   B. has been          C. are                     D. have been

4. Tom with other boys ________ to go and ________ the game.

A. want, watch a B. wants, watches                               C. wants, watch   D. want, to watch

5. —How many students are there in your school?

—________ the students in our school ________ over two thousand.

A. The number of; is                          B. The number of; are   C. A number of; is   D. A number of; are

6. Neither the students nor the teacher ________ in the classroom at that moment.

A. were                 B. was                    C. weren’t             D. wasn’t

7. —What ________ the number of the girls in your class?

—About twenty.

A. is                       B. am                     C. are                     D. be

8. Both Lily and Lucy ________ to the party yesterday.

A. invited              B. was invited  C. had invited  D. were invited  

9. ________ the books in our library ________ about 20,000.

A. The number of, are                       B. A number of, is   

C. The number of, is                          D. A number of, are

10. The workmen ________ busy ________ the small parts together in the workshop.

A. is, with             B. are, putting       C. is, putting         D. be, with

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