[解析文法] [本篇無朗讀音檔]
本文主講 賴世雄
1. it 作虛主詞
a. 代替不定詞片語
It is good to study. (= To study is good.)
讀書有益。
It is necessary to read these books. (= To read these books is necessary.)
讀這些書是有必要的。
b. 代替 that 子句(名詞子句)
It is good that he wants to study. (= That he wants to study is good.)
他想讀書,這是件好事。
2. it 作虛受詞:即 it 作不完全及物動詞之受詞,代替不定詞片語或 that 子句。
a. 動詞若加受詞後意思很完整,而無須補充說明時,為完全及物動詞。但若動詞加上受詞後意思仍不完整,而需要補充說明,則為不完全及物動詞,其補充語一定是名詞或形容詞(包括分詞變成的形容詞)。
以下是常用的不完全及物動詞:
think / consider / deem (認為 ⋯⋯ 是 ⋯⋯ )
believe (相信 ⋯⋯ 是 ⋯⋯ )
find (發現 ⋯⋯ 是 ⋯⋯ )
I consider him. ( ╳ ,意思不完整,故需補充語 )
→ I consider him good. ( ○ )
→ I consider him a good man. ( ○ )
我認為他人很好/是個好人。
b. 不定詞片語或 that 子句有名詞的功能,可作主詞和受詞,但不能直接作不完全及物動詞的受詞,必須用 it 代替。
I think that he is good true. ( ╳ )
→ I think it true that he is good. ( ○ )
我認為他人不錯是事實。
I think to get up early good. ( ╳ )
→ I think it good to get up early. ( ○ )
我認為早起很好。
3. it 可用於強勢句構中,來強調主詞、受詞、介詞片語、時間副詞(片語)或副詞子句,句型如下:
It is / was + 名詞/代名詞 + that 引導的形容詞子句
It is / was + 介詞片語/時間副詞(片語)/副詞子句 + that 子句
Kathy told everyone your secret.
→ It was Kathy that ( 或 who) told everyone your secret.
把你的祕密告訴大家的是凱西。
His words made me angry.
→ It was his words that ( 或 which) made me angry.
使我生氣的是他的話。
It was in 2010 that I began to study English.
我是在 2010 年開始學英文的。
It was because he was lazy that he failed.
他是因為懶惰的關係而失敗的。
4. most / all / some / half / part / the rest / one-third / two-thirds / none + of + the / 所有格 + 不可數名詞 + 單數動詞 / 複數名詞 + 複數動詞
Most of the money was stolen. (money 不可數,故用 was)
大部分的錢都被偷了。
All of the students are here. (students 為複數名詞,故用 are)
所有學生都在這裡。
One-third of the students have taken the test.
有三分之一的學生參加了測驗。
5. 反身代名詞( myself 、 ourselves 、 yourself 、 yourselves 、 himself 、 herself 、 itself 及 themselves )的強勢用法:
He himself did it. ( 強調主詞 )
他親自做這件事。
*反身代名詞不可單獨作主詞
I want to see the boss himself. ( 強調受詞 )
我要見老闆本人。
6. that (表單數)、 those (表複數)代替前面所提到的名詞,以避免重複。
The color of the door is more beautiful than that (= the color) of the window.
這扇門的顏色比那扇窗的好看。
The plants on the other side of the fence are greener than those (= the plants) in my garden.
在籬笆另一邊的花草比我花園裡的綠。
7. a / an / any / some / a few / this / these / that / those / which + 名詞 + of + 所有格代名詞( mine / yours / his / theirs / Peter ’ s 等)
He is a friend of mine. ( 非 me)
他是我的一位朋友。
This friend of yours is good. ( 非 you)
你的這位朋友人很好。
注意
上述結構不可與定冠詞 the 並用,換言之,無下列用法:
He is the best friend of mine. ( ╳ )
→ He is my best friend. / He is one of my best friends. ( ○ )
他是我最好的朋友(之一)。
精選試題
1. _____ was after Mark talked to Julia that he knew the truth.
(A) This (B) That (C) It (D) He
2. Seventy percent of the water _____ contaminated.
(A) are (B) have (C) is (D) has
3. Lisa _____ made this box lunch for her daughter.
(A) itself (B) myself (C) yourself (D) herself
Ans:1. C 2. C 3. D
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