Sentence Correction

lunarpower wrote: in this case, you can't use "..., twice as many as...", because that's an appositive modifier. appositives must modify some noun that comes IMMEDIATELY before the comma, which in this case would have to be whatever figure is twice whatever other figure. since that figure isn't given, you can't use this construction.

lunarpower wrote:

Jatinder wrote:Couple of ppoints here:

We need doubling here, not twice

as twice is an adverb, and we have to modify "the number", which requires adjective

i will reiterate my advice from a previous post: do not concentrate excessively on labeling constructions as parts of speech (or other linguistic terms). instead, just learn which types of constructions are allowed and which aren't, and select sentences that are constructed along the lines of the former.

in this case, you can't use "..., twice as many as...", because that's an appositive modifier. appositives must modify some noun that comes IMMEDIATELY before the comma, which in this case would have to be whatever figure is twice whatever other figure. since that figure isn't given, you can't use this construction.

ust wondering how A is correct?

Ron, Can you please comment?

because the increase itself was doubled.
the "that of" is a PRONOUN. it would have to stand for a noun that would actually make sense in context - and there's nothing "of" the increase. therefore, "that of" is wrong.

lunarpower wrote:

duongthang wrote:Ron, please, help
why B is wrong. "that of" means "the number of" and is logic

nope -- "that of" logically doesn't correspond to anything, as i pointed out above. this is why it is wrong; there's no legitimate antecedent.
(in context, the increase itself was doubled.)

if you try to let that = number, then you get "the number of the increase"; this is a nonsense construction.

"the number of X" only works in two ways -- (1) if X is some countable noun that you are actually counting (e.g., the number of dogs in the shelter); (2) if something is labeled with a number (e.g., the number of the room in which our meeting will be held).

I learn English, making my mother happy------ is correct
English is learned by my, making my mother happy----------is incorrect.

Am I right?

you've labeled correct/incorrect correctly, yes.
(there's no such thing as "by my" --> that would be "by me")

lunarpower wrote:

duongthang wrote:Ron, please, help
why B is wrong. "that of" means "the number of" and is logic

nope -- "that of" logically doesn't correspond to anything, as i pointed out above. this is why it is wrong; there's no legitimate antecedent.
(in context, the increase itself was doubled.)

if you try to let that = number, then you get "the number of the increase"; this is a nonsense construction.

"the number of X" only works in two ways -- (1) if X is some countable noun that you are actually counting (e.g., the number of dogs in the shelter); (2) if something is labeled with a number (e.g., the number of the room in which our meeting will be held).

I learn English, making my mother happy------ is correct
English is learned by my, making my mother happy----------is incorrect.

Am I right?

you've labeled correct/incorrect correctly, yes.
(there's no such thing as "by my" --> that would be "by me")

lunarpower wrote:

Jatinder wrote:Couple of ppoints here:

We need doubling here, not twice

as twice is an adverb, and we have to modify "the number", which requires adjective

i will reiterate my advice from a previous post: do not concentrate excessively on labeling constructions as parts of speech (or other linguistic terms). instead, just learn which types of constructions are allowed and which aren't, and select sentences that are constructed along the lines of the former.

in this case, you can't use "..., twice as many as...", because that's an appositive modifier. appositives must modify some noun that comes IMMEDIATELY before the comma, which in this case would have to be whatever figure is twice whatever other figure. since that figure isn't given, you can't use this construction.

ust wondering how A is correct?

Ron, Can you please comment?

because the increase itself was doubled.
the "that of" is a PRONOUN. it would have to stand for a noun that would actually make sense in context - and there's nothing "of" the increase. therefore, "that of" is wrong.

lunarpower wrote:An increase is a numerical quantity, so, like any other numerical quantity, it can theoretically be doubled.

I.e., in 1989 ("the previous year"), this statistic went up by N percent. Then, in 1990, it went up by 2N percent (= twice the previous increase).