BY = amount of change | TO = final number | OF = quantities with units
❌ WRONG
✅ CORRECT
Sales increased of 20%
Sales increased by 20%
We grew at 50 employees
We grew to 50 employees
An increase by 20 units
An increase of 20 units
Grammar Rule #4: Prepositions of Time
Prep
Use With
Examples
AT
Times, moments
at 9am, at noon, at midnight
ON
Days, dates
on Monday, on May 5th
IN
Months, years, seasons
in June, in 2025, in summer
💡 Common errors: "in Monday" ❌ → "on Monday" ✅ | "at the morning" ❌ → "in the morning" ✅
Grammar Rule #5: Articles (a, an, the)
Important: French uses articles more than English!
❌ WRONG (too much article)
✅ CORRECT
The life is beautiful
Life is beautiful
I like the music
I like music (general)
I am manager
I am a manager
She is engineer
She is an engineer
💡 Rule: No article for general things | Use "a/an" with jobs | Use "the" when specific
Grammar Rule #6: Common Verb Errors
❌ DON'T SAY
✅ SAY
I am agree
I agree
I am disagree
I disagree
The informations are
The information is (uncountable!)
An advice
Some advice (uncountable!)
Make a formation
Provide training / Give training
Grammar Rule #7: Say vs Tell
SAY = don't need person | TELL = must mention person
SAY
TELL
He said "hello"
He told me that...
She said it was good
She told them to wait
💡 Error: "He said me" ❌ → "He told me" ✅ | "She told that" ❌ → "She said that" ✅
📝 Quick Reference (Page 3)
Most Common French Speaker Errors
❌ DON'T SAY
✅ SAY
I am agree
I agree
We must to go
We must go
I work here since 2020
I have worked here since 2020
I assist to the meeting
I attend the meeting
The responsible will call
The manager will call
We need a formation
We need training
Actually, I live in Paris
Currently, I live in Paris
I am manager
I am a manager
The meeting is in Monday
The meeting is on Monday
We start at the morning
We start in the morning
Let me present you John
Let me introduce you to John
Thank you for your comprehension
Thank you for your understanding
I stay available
I remain available / I'm available
I have a doubt
I have a question / I'm not sure
Pass an exam
Take an exam (pass = succeed)
✅ Self-Check Before Speaking
☐ Did I put "to" after a modal verb? (Remove it!)
☐ Am I talking about duration? (Use present perfect with since/for)
☐ Did I say "assist to"? (Change to "attend")
☐ Did I say "actually" when I mean "currently"?
☐ Did I forget "a/an" before a job? (Add it!)
☐ Am I using the right preposition? (at/on/in)
💡 Focus on: (1) Modal verbs (no "to") - very common | (2) False friends - embarrassing! | (3) Present perfect with since/for - sounds very French without it