非谓语高难度试题对比大总结1. being exposed to 和（be） exposed to区别,即being done 与 be done （去be）的区别：解题关键：看非谓语所做成分 _（expose）to the sun made his skin burnt. _(expose) to the sun, his skin was made burnt.2. devote oneself to和 （be） devoted to 的区别： 关键：看是否有oneself。 _(devote) himself to his work, he didnt see us. _(devote) to his work, he didnt see us.3.base A on B 和 （be) based on 的区别： _(base) your decision on feeling not reasoning, you will regret in time. Your decision _based_(base) on feeling not reasoning, you will regret in time. 4.seated 与sitting _seated (seat)at the back the classroom, I cant hear you clearly. _sitting_(sit)at the back the classroom, I cant hear you clearly.5.remain to be done 与 remain 的区别： Remain _(seat) until the bus has stopped completely. Which team will win remains _to be_seen_(see).