The full rule, with examples. This is your reference before the exam.
IN — months, years, seasons, and long periods
Use “in” for longer periods of time — months, years, seasons, and centuries.
“The conference on climate change is in June.”
“Renewable energy use grew a lot in 2020.”
“It rains a lot in winter.”
ON — days and dates
Use “on” for specific days and dates.
“We’re organizing a clean-up on Saturday.”
“Earth Day is on the 22nd of April.”
AT — exact times, and a few fixed expressions
Use “at” for exact clock times, and for a few fixed time expressions.
“The recycling truck comes at 8 o’clock.”
“Many animals are more active at night.”
“Things get quieter at the weekend.”
SINCE, FOR, DURING — extra useful ones
SINCE + a starting point
“Pollution has increased since 2010.”
FOR + a length of time
“This forest has existed for hundreds of years.”
DURING + a period when something happens
“Energy use is highest during the summer.”
A common mistake
Don’t mix up “in” and “on”. Months and years use “in” — days and dates use “on”.
❌ “The event is on June.”
✅ “The event is in June.”
❌ “We’re meeting in Monday.”
✅ “We’re meeting on Monday.”
Short rounds testing everything from the Learn zone above.
🔍 Find the mistake — tap the wrong word.
🔎 Tap the word that doesn't belong.
🔍 Find the mistake — tap the wrong word.
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