never … but …

结构︰

never…＋but＋主语＋动词

说明︰

此句型意为“每…必然…”。but 在此是<连接词>，引导<副词子句>。本句构的 but 相当于 if…not…。

It never rains but it pours.
一下雨就倾盆而降－－祸不单行。
I never look at the stars but I think how little I am.
我每次看星星必然会想自己是多么渺小。
She never reads a book but she goes to sleep.
她一看书就想睡觉。
He never goes on a vacation but he takes his pet dog.
他每次度假都会带他的狗去。
I never see him but I am happy.
我看到他就高兴。
He never goes out but he drops in at that bookstore.
他每次外出都会顺道去那家书店待一会儿。