本句中is of vital importance为“be+of+n.”结构,该结构的具体用法如下:
(1)介词of后面接表抽象意义的名词,如value, use, help, importance, significance等,相当于该名词对应的形容词。该名词前面可以用表程度的词加以修饰,如little, no, great, much, some等。
The book is very useful to the beginners.
=The book is_of_great_use to the beginners.
这本书对初学者来说非常有用。
(2)介词of后面还可接一些表示人或物属性的名词,如size, color, height, length, age, shape等,用来描述人或事物的属性,在句中作表语或后置定语。
She is looking for some girls of_an/the_same_age.
她在寻找一些同岁的小女孩。
[名师指津] 在此结构中,如果后面的名词前有不定冠词a/an,则这个冠词相当于the same。
.基础点全练
1.单句语法填空/句型转换
Involved (involve) in the bank robbery, Tod got arrested by the local police early in the morning.
②He was annoyed to_learn (learn) that he would not be able to catch the train.
③Malala was awarded the Nobel Peace Prize for 2017, making (make)her become the youngest winner of Nobel Prize.
④Exercise is a vital activity for your health, and can actually contribute to getting (get) betterquality sleep.
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