那请问Cost smokers a lot of money应该不是祈使句啊,为什么也用动词原形开头

那请问Cost smokers a lot of money应该不是祈使句啊,为什么也用动词原形开头 Cost smokers a lot of money是个句子吗 Educate people on the dange 祈使句都用动词原形开头吗? 在英语中,为什么一个祈使句要用动词原形开头? 英语句子开头的动词用原形只有祈使句吗? --that car must have cost a lot of money. These pictures cost me a lot of money(同意句) 根据cost a lot of money 可以写出什么单词 that car must have cost a lot of money. cost a lot of money 可以写出什么单词 the accident did a lot of (damage) to the car为什么括号填动词原形 It does not cost a lot of money and most of all.most of