"x not in" vs. "not x in"
121410
"x not in y" or "not x in y"
132687
"I have no ..." vs. "I don't have ..."
41864
"Though" vs. "although"
155889
when to use "of" and when not?
90049
When should we use proximity rule in "either/or", and "neither/nor"?
37279
"can't" versus "couldn't", what is the difference?
83887
"in case" vs. "if"
110544
Usage of "ain't"?
27554
When should "into" be used rather than "in to," and vice versa?
140709
When to use in vs ref vs out
151917
Difference between "not a", "no" and "not any"
90083
Usage of "rather than to"
103365
weren't playing vs didn't play
133685
Use of "though" versus "however"
138641
"It isn't" vs. "it's not"
43527
Should "neither/either" be followed by "have" or "has"?
59969
Difference between "at" and "in" when specifying location