从"So do I"谈起

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两人对话，乙方对甲方的问话常可用简短回答作出 反应。例如： Do you like it? -- Yes，I do.这同样适用于陈述句的场合： You worry too much．-- No，I don't.在后一种情况下，乙方也能"So＋do＋主语"之类 的结构表示看法。
例如甲方说"我喜欢苹果"，乙方 如果想表示"我也喜欢苹果"，英语可以说：

A：I like apples.
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8 U" t8 Y  z5 r9 g8 y( ZB：So do I．（＝ I like apples，too。）

/ Q! i+ V5 s: y7 m　这里的so在意义上相当于in the same way，即同样、 也那样，作简短反应表示同样看法时常用之。

本文 就诸如此类的四种结构略作介绍。
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1．"So＋do＋主语"结构 在简短反应中表示"我也如此"或"另外一个人也 如此"时，也就是主语不同于上文的主语以及上 文并无可用于构成倒装的动词（即操作词时）， 可用此结构。例如： A：I like playing football. B：So do I./So does my brother./So did my father. 如果上文有可用于构成倒装的动词时，则用相同 的动词或根据不同人称用同类的动词。 I must go -- So must I. John can speak French．--So can I. I've got a new car．--So has John. She is clever.-- So is he.

2．"Neither/Nor ＋ do ＋ 主语" 结构 如果上文表示否定意义而在简短反应中表示同样 看法时，可用此结构。例如，甲方说I can't swim， 乙方如果想表示"我也不会游泳"，英语可以说 Neither can I. / Nor can I（＝I can't either）。
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又例如： A：He doesn't speak French. B：Neither/Nor do I. Neither/Nor does my brother. Neither/Nor does my father. 关于以上两种结构，有两点说明：
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第一，能用动词缩略形式。例如： I'm going to London. ---So's John。(is) I've been to New York. ---So's John.(has) I'd have gone to Tokyo if I could．---So'd John.(would) John hasn't got a visa. ---Nor've do I．(have) Jim and Mary aren't acting in the college play. ---Neither's Peter.(is)
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第二，上述甲乙对话如用and连成一句可出自一人 之口。例如： John can speak French and so can't I. John can't speak French and neither/ nor can I. John speaks French and so do I. John doesn't speak French and neither/nor do I. 上述斜体部分相当于and I can, too / and I can't either / and I do too / and I don't either 的意思。 　
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3．"So＋主语＋do"结构 在简短反应中，对别人所说的情况加以肯定以及 主语与上文主语相同时，可用此结构，注意，这 里不用倒装同序；so 的意义相当于indeed, certainly，即"不错"、"对了"。例如： A：John smokes a lot. B: So he does．(=He smokes a lot indeed.) 这类简短反应往往带有说话人的惊奇口吻。例如： A：Look，it's raining! B: So it is. 在这里，So it is的含义是 You are right! It is raining；and this surprises me. 　
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6 d; L. A) B5 O( R4．"Nor＋主语十do"结构
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如果乙方想对甲方所否定的情况加以肯定时，可用此 结构(注：在这类结构中，neither少见)例如： Look! It isn't raining any more!

6 ~4 H& N5 a. h! @7 H5 F---Nor it is!
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This cup hasn't got a handle!

% T, R' p/ t9 a6 N---Nor it has!

/ I) Y! n# g4 k$ Q5 v9 P四种结构的介绍就到此为止。下面从L.A. Hill所著 An Intermediate Refresher course 一书摘引一则 对话供初学者观察上述四种结构在上下文中的使用 情况。
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Derothy: Look it's raining!
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Donald: So it is! I'm not going out this afternoon now.

5 a3 Q* }9 o, |6 J$ Y& x: Q6 S' wDorothy：Nor am I. You and I haven't got anything to do this evening, you know.
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% j0 `$ [$ R* t! M$ Q9 k% \& |Donald: Nor we have! We can go to the cinema then.
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Derothy: So we can.

2 X) P9 a. Q! d" ^Donald: There's a good film on at the "Metropole".

" N' Q, E) O* ?( dDerothy: So there is! Shall we go?
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: G: r2 H" p! B( j% n+ |9 G9 wDenald: Yes, let's.
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Derothy: But it doesn't start until 6 o'clock.

Denald: Nor it does! I thought there was an early performance too.

/ M3 z$ q: q+ o- z* RDorothy：So did I . Well, I don't want to sit about doing nothing until 6.

) L% {: ]7 |9 j( bDonald: Nor do I …Oh, look, it isn't raining any more.

Dorothy: Nor it is! I'd like to go for a walk.

Donald: So would I…OH, who's that coming up the road?

( N* J" [3 a. _' Y- a0 QDorothy: It's the postman.

Donald: So it is! He's very early. The evening newspaper hasn't even arrived yet.

Dorothy: Nor it has! That's late today. I hope the postman has a letter for us.

9 r( t$ [9 I3 f' mDonald: So do I - but I don't want any more bills!

' z# B. M% I' n; T( i3 M5 }Dorothy: Nor do I!
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2 j! W2 e$ |2 t4 I5 h) z* cDonald: Here he is…there's a parcel for us!

1 Y) q" I% W! X- Q  P5 ~Dorothy: So there is! I wonder who sent it.
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Donald: So do I. I wasn't expecting a parcel.
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+ \( j1 S  R" L  H9 U$ }Dorothy: Nor was I. Oh, it's from Mother - they are woolen clothes for the baby!

Donald: So they are! She must have knitted them herself!
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0 X! m5 J% M$ Y* A/ qDorothy: There's no letter in the parcel.

Donald: Nor there is! I find that strange.
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+ }( ]$ \* [2 T/ A; D0 D6 Z0 w0 kDorothy: So do I. She always writes to us on Sundays. Oh, well, perhaps we shall get a letter from her tomorrow.