Expressing Capability/incapability

Expressing Capability/incapability

CAPABILITY	INCAPABILITY
I’m confident I could…	I’m not sure I’m capable enough to…
I believe I could…	There is nothing we can do to…
… Is competent to…	I’m not competent in
I’m certain I’m capable of…	I won’t be able to…
I feel sure I’m able to …	I cannot
I know how to…	I don’t know how to…
I am good at…	I am not good at…
I have ability …	I don’t have ability …
	I don’t have experience…

I	Am /was	Able to Capable of Competent to	Solve such serious problem. Finish the home work. Find the solution. Speak English well.
He She It	Is/was
They You We	Are/were

I	Can Can not Can’t	Solve such serious problem. Finish the home work. Find the solution. Speak English.
He She It
They We You