Question

—— What’s wrong with Tom?
—— Bad luck! Tom     his bike and hurt his leg.

A．fell

B．fell off

C．fell down

D．fell behind

Answer 1

B               

             
试题分析：考查动词。Fell摔倒；fell off从……摔下来；fell down跌倒；fell behind 下降退后。句意：汤姆怎么了？很糟糕！他从自行车上摔下来，伤到了腿。 1. fall down强调的是“滑倒、倒下”，后接宾语时应加上介词 FROM。The boy hit the tree to hard that he fell down.男孩重重地撞在树上，结果自己倒下了。 2.fall off强调的是“跌落、从……掉下来”，后直接接宾语。The girl is falling off the bike. （=" The" girl is falling down from the bike.）女孩正从自行车上摔下来。故选B项。