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And they do, too

 
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muscle5572



Joined: 17 Jun 2010
Posts: 10

PostPosted: Sun Jul 18, 2010 10:13 pm    Post subject: And they do, too Reply with quote

1. He'll be busy, and she will, too.
2. I have to study, and they do, too.

I can understand the sentence number 1 "She will, too." because will is auxiliary verb.
I don't understand number2 why it said " they do too" . it should be "they have too."
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pugachevV



Joined: 16 Jan 2003
Posts: 2295

PostPosted: Mon Jul 19, 2010 8:10 am    Post subject: Reply with quote

One of the functions of the verb to do is to refer back to a verb already mentioned, so I have to study they do (have to study) too.
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Lorikeet



Joined: 08 Oct 2005
Posts: 1877
Location: San Francisco

PostPosted: Mon Jul 19, 2010 9:21 pm    Post subject: Reply with quote

The auxiliary used with "have to" is "do" (in American English, anyway)

Note: Do you have to go? Yes, I do.
You have to go, don't you?
I have to go now. Do you?
I have to study, and they do too.

In American English, we generally use "Do you have a pen?" but I know there are variants of English that use, "Have you a pen?" I don't know if there are variants that use, "Have you to go?" but I don't remember hearing it.
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