"not so useful as" vs "not as useful as"
29059
“so long as” vs. “as long as”
86231
"Like" versus "as"
41179
"Outcome" Vs "Result"
64675
"Not enough memory" vs. "no enough memory"
29914
What is the difference between  and ?
150084
Use "or" or "nor"?
155889
when to use "of" and when not?
130582
The usage of 'so...as...'
128241
"some " vs. "some of "
56553
Making adult decisions "is" or "are" really not fun: Which is correct?
69329
Something versus anything
116431
Comparative vs. Superlative While Comparing Two Items
69961
"Cost" vs "expense" -- a usage question
28346
Difference between 'such as' and 'like'
105018
can I use "used to" for something is "used for" some objective?
42399
"'To'/'on' the contrary" in these sentences: is the difference very slight?
87638
Which is better: ... or ...