He has twice as many books as I

[Nonverbis]

He has twice as many books as I.

Could you tell me whether this is a grammatically correct sentence? What troubles me is that "I" at the end. I'm not sure whether I should put "I" or "me".

Could you recommend me some book to read on this subject.

 

[GoesStation]

Traditional grammarians insist that the subject pronoun "I" is the only correct choice. The overwhelming majority of native English speakers would use the disjunctive* pronoun "me".

Some old-fashioned teachers would mark "me" as wrong.

*Traditional grammarians wouldn't accept the assertion that "me" is a disjunctive pronoun (a pronoun that can function as both subject and object), despite the evidence that nearly all English speakers use it that way.

 

[5jj]

Many people say 'me', but, grammatically speaking, it should be 'I' - He has twice as many books as I (have).

(Crossposted)

 

[Nonverbis]

Could you recommend something to read on the subject.

 

[GoesStation]

The Wikipedia article is a good start.

 

[Tarheel]

Could you recommend something to read on the subject?

Punctuation!

 

[jutfrank]

If you're looking for this English teacher's advice: Use me. Alternatively, use I do.

 

[emsr2d2]

My advice: In an exam, use "I", "I do" or "I have". When casually chatting with native speakers, use "me".

 

[PaulMatthews]

He has twice as many books as I.

Could you tell me whether this is a grammatically correct sentence? What troubles me is that "I" at the end. I'm not sure whether I should put "I" or "me".

[1] He has twice as many books as [I__].
[2] He has twice as many books as [me __].

If the pronoun is understood as the subject, as it is here, the choice of case depends on the style.

In formal style [1], the pronoun appears as nominative, just as in the unreduced clause "He has twice as many books as I have".

But informal style has accusative, as in [2], where the missing verb cannot be inserted.

Many speakers would avoid both constructions by retaining the verb, as in the unreduced clause.