, he couldn't keep his eyes .

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____, he couldn't keep his eyes ____.
A. Tired as he was... open B. As he was tired...open
C. Tired as he was... opened D. As he was tired...opened
答案是B, A错在哪里?

A和C其实就是倒装句,形容词/副词+as+主语+be/动词=although.尽管...在这里后后半句的意思放在一起时讲不通.只有B,D形式的才能讲得通：因为他太累了,所以他忍不住闭上了眼.而open 本身又有形容词的意思,可以作表语,故选B

tom was very tired.he couldn't keep his eyes open.（改为同一句）看补 The child _____ his mother carefully,but he couldn't ____ an He looked ____ the station,but couldn't see his friends anyw .____ a wrong address,he couldn't find his friend's home. He walked with his eyes ____ his book. he was ___tired ____ he couldn't go on working He tried ____(catch)the cat,but he couldn't ____ his mother,the baby couldn't help laughing ____,I couldn't persuade him to change his mind He couldn't come here.Something happened ____ him yesterday. ____ many times but he still couldn't understand it He opened his eyes wide in surprise because he couldn't beli