SAT语法题：修改句子In just a couple of years,low-carbohydrate diets have accomplished what the government has failed to do in decades of trying:convince the public that refined grains are bad and whole grains are good.这个句子是已经改对了的,还有一个选项是convince变成convincing其他都不变,为什么convincing不对呢?“分号”不是既可以做连词又可以不是连词吗?
问题描述：
SAT语法题：修改句子
In just a couple of years,low-carbohydrate diets have accomplished what the government has failed to do in decades of trying:convince the public that refined grains are bad and whole grains are good.
这个句子是已经改对了的,还有一个选项是convince变成convincing其他都不变,为什么convincing不对呢?“分号”不是既可以做连词又可以不是连词吗?
答