BookIV Unit8
句型1：whether . . . or . . . , S + V
◊Whether it rains or shines, Greg will walk his dog after dinner.
Greg will walk his dog after dinner whether it rains or shines.
Whether or not it rains, Greg will walk his dog after dinner.
Whether it rains or not, Greg will walk his dog after dinner.
◊ Whether Judy is working or taking rests, she listens to classical music. (V1ing=V2ing)
◊ Whether Craig drives or takes a shower, he sings his favorite songs. (V1s/es=V2s/es)
◊ Whether the girl wanted to keep a dog or a cat, she had to ask for her mother’s permission first. (N1=N2)
重點提示：
1. whether A or B
(1) 引導表示讓步的副詞子句，意為「不論…或…」
(2) whether不可代換成if。
(3) A=B (詞性)
2. whether or not
(1) 引導副詞子句，意為「不論是否…」
(2) or not不可省略。
(3) whether不可與if代換
3. Whether S + V or not
(1) or not可省略。
(2) whether不可代換成if。
4. whether子句置於主要子句前或後均可。
補充 #whether引導名詞子句，意為「是否」，可作主詞、受詞(動詞的受詞或介系詞的受詞)、主詞補語： 1.當動詞的受詞 (1) whether可代換為if ◊ The popular singer wonders whether the tickets to his concert will be sold out. 2.當主詞、介系詞的受詞、主詞補語 (1)whether不可以用if代替。 ◊ Whether the missing child is alive remains uncertain. # whether後可接不定詞to V，解為「是否」，但if無此用法。 |
BookIV Unit8
句型2：雙重否定「無…不…，每…必…」
◊ The mother never holds/doesn’t hold her baby without washing her hands first.
Whenever the mother holds her baby, she washes her hands first.
The mother never holds her baby but she washes her hands first.
重點提示：
1. S + never/aux. not + V1 + without + V2ing（雙重否定）「無…不…，每…必…」
2. Without +Ving/ N
3. S1 + never/aux. not + V1 +but + S2+V2 (可用於前後主詞不同的情形)
EX.Tom never saw the girl but his heart beat violently.
補充 其他雙重否定句型 1. no/not . . . without + V-ing/N(P) …無…不… 2. no/not/nothing . . . + that + aux. + not + V/but + V . . . 沒有…不… 3. . . . few + Ns + but + V . . . 幾乎每個…都… 4. 其他表雙重否定的情形： |
