$14.$ The book was interesting enough for me to read it twice.

- S + tobe + adj + enough + (for sb) + to V. (Đủ để làm gì).

$15.$ He doesn't have enough time to finish the essay in 15 minutes.

- S + V + enough + noun + (for sb) + to V.

- "enough" đi chung với danh từ thì đứng trước danh từ.

$16.$ I don't know enough English words to read a newspaper in English.

- S + V + enough + noun + (for sb) + to V.

- "enough" đi chung với danh từ thì đứng trước danh từ.

$17.$ The sea was too rough for the children to go swimming.

- S + tobe + too + adj + (for sb) + to V (Quá... để làm gì).

$18.$ This math exercise is too difficult for her to do.

- S + tobe + too + adj + (for sb) + to V (Quá... để làm gì).

$19.$ We don't have enough chairs for 45 students in our class.

- S + V + enough + noun + (for sb) + to V.

- "enough" đi chung với danh từ thì đứng trước danh từ.

$20.$ This book isn't small enough for you to put in your pocket.

- S + tobe + adj + enough + (for sb) + to V.

$21.$ He studied hard enough to pass the entrance exam easily.

$22.$ She plays the piano skillfully enough to be a famous pianist one day.

- S + V + adv + enough + (for SB) + to V nguyên thể