不可以吧!应该改成So worried he was,he couldn't sleep或者是He was too worried to get into sleep.而楼主改的句子,要么就是前半句少了系动词be,要么就是后半句的情态动词couldn't要接动词原形.所以这个句子没改好喔~落下了he was so worried ,couldn't sleeping 这样可以吗 那如果couldn't to sleep 呢呵呵同学 情态动词couldn't(can,could,may,might,should,will,would )后的动词一般都只会出现原形。就是没有介词to，也没有-ing，-ed这些时态，所以您上面的句子要改的话只能勉强改成He was worried and couldn't sleep喔~呵呵 希望能帮到您！