Just tell me if this sentence is constructed properly. Pls give your reasons as well.
IT USED to be simple. When the world economy was in trouble, speculators sold the rand; when things looked brighter, they bought it. A unique blend of factors made South Africa’s currency a good gauge of how investors feel.
I'm happy to help here.
You actually have three sentences here, and they are all correct, though the first is not really "GMAT worthy".
The first sentence is relatively colloquial ---
1) It used to be simple
This is a colloquial American construction that one is quite unlikely to see on the GMAT Sentence Correction. This is a way of taking about something in the past.
American Colloquial: I used to go to the library every day
GMAT level: At one time, I would go to the library every day
American Colloquial: It used to be the case, in the 1960s, that gas was under $1 a gallon.
GMAT level: In the 1960s, gas was under $1 a gallon.
The second sentence you quote is unremarkable. In the third sentence, notice that the object of the preposition "of
" is a substantive clause, "how investors feel
." This construction is exemplary of what the GMAT SC might test. For more on substantive clauses, see:http://magoosh.com/gmat/2012/substantiv ... -the-gmat/
Does all this make sense?
Magoosh Test Prep