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MaXmOuSe Posted 21 years ago
Grammar

another problem !

1. Photography changed dramatically ________ introduced instant pictures.
A. when Polaroid
B. Polaroid
C. when was
D. it when Polaroid

Why we have to use "when Polaroid" not "when was" ?
  

Top answer

I can't think of an instance where [the exact order of] 'when was' is ever used without leading to a question mark.

  • I can't think of an instance where [the exact order of] 'when was' is ever used without leading to a question mark.
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3 Answers
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I can't think of an instance where [the exact order of] 'when was' is ever used without leading to a question mark.
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Hello MaXmOuSe,

a sentence, even if it's a subordinate clause, needs a subject. In your example there are two parts (the underlined items are subjects):

Photography changed dramatically.

Polaroid introduced instant pictures.

rgds,

cairn
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MaXmOuSe
1. Photography changed dramatically ________ introduced instant pictures.
A. when Polaroid
B. Polaroid
C. when was
D. it when Polaroid

Why we have to use "when Polaroid" not "when was" ?

As Cairn says, you need a subject for the verb in the subordinate clause. If you choose 'when was', the only possib

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