He is intelligent enough to answer all the question

Nam isn't tall enough to reach the shelf.

Lan is good enough to pass the exam.

-S + tobe + adj + enough + (for SB) + to V-inf

-S + V + adv + enough + (for SB) + to V-inf

-S + tobe not + adj + enough + (for SB) + to V-inf

He is intelligent.He can answer all the question.(using:enough)
Trl:He is intelligent enough to answer all the question.
Câu 2:Nam isn't tall.He can't reach the shelf(using:enough)
Trl:Nam isn't tall enough to reach the self.
Câu 3:Lan is good.She;ll pass the exam(using:enough)
Trl:Lan is good enough to pass the exam.

+)S + be + adj. S + V.

->S + be + adj + enough + to + V.

-)S + be + not + adj. S + V.

->S + be + not + adj + enough + to + V.