What delicious food it is!
多么有味的食物呀！
What beautiful flowers they are!
多么漂亮的.花呀！
how例句：
How cold it is today!
今天多么冷呀！
How nice the pictures are!
多么漂亮的图画呀！
How happy they look!
他们显得多么高兴呀！
How well she sings!
她唱得多好呀！
How hard they are working now!
他们干得多么起劲呀！