C这是个常见的句型：祈使句（动词原形开头， 表条件） + and + 陈述句（一般用will + 动词原形）Work hard , and you'll catch up with him.=If you work hard, you'll catch up with him如果表否定， 中间用orHurry up, or you 'll miss the train.=If you don't hurry, you'll miss the train【希望帮助到你，若有疑问，可以追问~~~祝你学习进步，更上一层楼！(*^__^*)】...
