taught more than 100 hours or taught for more than 100 hours
132555
"I've been doing this (for) a week" -- When do you leave out the 'for' when talking about duration, and when do you not?
25848
a broad range of vs a wide range
26350
"Many a year" vs. "many years"
117554
Should I use "half the time" or "half of the time"?
72584
Answering about the time
115870
"Practise" vs. "practice"
21605
Omission of 'for' with various quantified time intervals: influence of verb
9098
Hundred or hundreds (for unit-less numbers)?
42961
Simple past or past perfect with "by" and years
150858
One and a half minute/minutes
143211
Does the "50 questions in 30 days" rate limit mean 30 calendar days, or 720 hours?
70276
Meaning: "waiting for 6 hours" vs. "6 hours since I was waiting"
77991
"Knowledge of" vs. "knowledge on"
155011
"He will come back in two hours" vs. "He will come back after two hours"
6542
Dilemma: Present Perfect Or Perfect Continuous?
16010
in ten minutes vs within ten minutes
49832
How do professors and lecturers learn to teach?