It is necessary that S.(主詞) +(should : 可省略) + V.(原形)

 It is necessary

that S.(主詞) +(should : 可省略) + V.(原形)

注意 : 凡 "形容詞(或動詞, 名詞)",

有 "重要的, 必須的, 急迫的, 適當的",

that 子句的動詞 要用 "假設語氣" ,

" should (應該) + V.(原形) " :

(美式英文, 因受到文學的關係,

should, 可省略,

在英文考試時 "should, 必省略" ,

考試直接考 "原形動詞",

不可用 "現在式, 過去式"

的 "正常時態"用法

句型:

1.主動: V.(原形)

2.被動: be(原形)

( 不可用 am/are/is, was/were )

+ Vp.p.(過去分詞)

(總之, 就是 考 "原形動詞")

此句型的形容詞:

1.重要的 :

important, vital, crucial, significant

2.必須的 :

necessary, imperative, essential

3.急迫的 :

urgent

emergency

4.可取的, 令人滿意的

desirable, preferable

5.適當的

proper

6.理所當然的(,自然的)

natural

例1. (主動)

(病人聽(/接受)醫生的建議(忠告/勸告)

是必須的.)

It is necessary that the patient

takes the doctor's advice.(誤)

It is necessary that the patient

took the doctor's advice.(誤)

It is necessary that the patient

take the doctor's advice.(正)

例2. (被動)

( 這個(專案)計畫

必須在下個月之前(被)完成. )

It is necessary that the project

is finished by next month.(誤)

It is necessary that the project

was finished by next month.(誤)

It is necessary that the project

be finished by next month.(正)