English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
Three functions of “in” as a prefix
- When “in” is added to a word at the beginning, it might generate the direct opposite of such words:
Formal- informal. - When “in” is added to a word at the beginning, it can have the same meaning as the word it is added to:
Flammable- inflammable.
Note that both flammable and inflammable mean that something can be easily set on fire.
When “in” is added to a word at the beginning, it might amplify the meaning of the word it is added to:
Value- invaluable.
Note that to be invaluable means to be of great value: Mallam MukhtarMaruf Abdul Azeez is my invaluable fan.
GAB

WOW
How can I join
Wow, interesting and more Lessoning.
Good
Good
Thank you for these
I’m glad to be in touch.
Thank you for the great job sir.
Wallohi I must confess this is very interesting may Allah bless your sir Dr GAB.
Formal and informal education is of great value as at now and I won’t mind if I become one of your invaluable fans.
Wow
This is great
You are revealing lots of errors people take for granted. Thanks and keep it up.
I love English for Today by Dr GAB. His method of teaching is simple, clear and concise.
Thank you for leaning, Babatunde.