帮忙用by造句

帮忙用by造句

题目
帮忙用by造句
帮忙用by造两个句,要by doing这样的结构.
答案
By doing extra homework,he soon got ahead of his class-mates.他靠多做家庭作业,很快在班上名列前茅.He keeps fit by doing exercises every morning.他每天早上做操保持健康.By doing this,they may at times be helping to restore competition.这样一来,他在某些时候,有助于竞争的加强.By doing so,she would risk committing a sacrilege.这样一来她就会冒亵渎神明的危险.He then earned his living by doing all kinds of odd jobs.后来,他靠打短工谋生.
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