Why not
不如───Not as good as;什么───what
Put them together and it's not as good as you'd think. Because a recent study shows that some vitamins block the beneficial effects of exercise.───把它们掺和在一起，并不像你想的那样好。因为一份最新的研究表明，某些维生素会阻碍运动发挥作用。
My writing is not as good as his writing.───我的书写不如他的好.
A distant relative is not as good as a near neighbour.───远亲不如近邻.
The play is not as good as I thought it would be.───这个戏剧并不如我想的那么好.
He believes that comtemporary poems are not as good as ancient ones.───他认为在古典诗歌创作方面近人不及古人.
Thirteen is not as good as one, but it's better than nothing.───13下是不如1下好, 但总比1下也不敲强.
fruit and yellow fruit are not as good as tonight's red fruit.───果，黄果果，不如今晚的红果果。
His Arabic was not as good as his English, but serviceable enough.───他的阿拉伯文没有他的英语好，但是足够用了。
She's not as good as she's cracked up to be.
My memory 's not as good as it once was.
It's not as good as it used to be.
Talking the talk is not as good as walking the walk.
Dreaming in the memory is not as good as waiting for the paradise in the hell.