It is conceivable that knowledge plays an important role in our life.
2)It is+形容词+to do/ doing
She had said what it was necessary to say.
Work hard, and you will finally be able to reach your destination.
It is said that visitors spend only half as much money in a day in Leeds as in Lon-don.
The reservoir is three times as big as it was ten years ago.
6) 倍数词+ more +名词/形容词十than
Smoking is so harmful to personal health that it kills seven times more people each year than automobile accidents.
The environmental problems are not as serious as they suggested in their report.
She is no more fit to be a manager than a schoolgirl would be.
9)Nothing is more...than(没有比……更……的;……是最……的)
Nothing is more important thanto receive education.
They hurriedly escaped into a cave that smelt of terror.