1.She works _________ as her sister.

1.She works _________ as her sister.
A.as hardly as B.not as good as
C.as carefully as D.not as better as
2.I was too sad to _________ last night.
A.feel sleepy B.fell sleepy
C.felt asleep D.fall asleep

1.C 首先,as...as结构,中间只能是原级,Dbetter是比较级,所以排除.然后中间的词语是用来修饰动词“works应该选一个副词,B排除.hardly当副词是几乎不的意思,与题意不和.这句话的意思是：她和她姐姐一样工作细致.
2.D.首先这是一个too+adj（形容词） to do（动词原形）的结构,表示‘太...而难以...'
felt,fell 都是过去式,所以排除.然后,从意思上,A.觉得困,D.入睡
故选D.这句话的意思是：昨晚我太难过而难以入睡.
这两道题的关键是要记住固定搭配的固定用法
...as...as...（...同...一样...)两个as之间一定不能使比较级或最高级
too...to do sth (太...而难以...)to 后面一定是动词原形,然后要根据句子意思来选择.