as引导让步状语从句中现在分词放在句首后面的助动词怎么用?
as引导让步状语从句中现在分词放在句首后面的助动词怎么用?
我是在语法书上看到这句话的觉得不理解，“如果动词或现在分词提前放在句首，谓语要补加助动词do/does /did,will等”然后它没举例子，我也不理解。
as that though引导的让步状语从句,从句在主句之前,as/that/though在主语之前,做主补的名词或形容词,作状语的副词及做和成为与的普通实义动词do/doing/done的形式放在句子最前面.
foolish though you may be,you are honest.形容词主补前置
try as you may,you won't succeed.����������Ͽ�����仰�ľ��ò���⣬�����ʻ����ڷִ���ǰ���ھ��ף�ν��Ҫ�������do/does /did,will�ȡ�Ȼ����û�����ӣ���Ҳ����⡣hehe���ֻ��һ����ͨʵ�嶯����ν���ô��ǰ��ʱ��ν�ﲿ�־�û�ж����ˣ�ֻ�ܲ���һ����ʡ����磺I play football every evening. Play though you will, I have no time.������Ը���棬��Ҳû��ʱ�䰡�� I shouted ,but he was not afraid.Shout as I did, he wasn't afraid.�����I playing football now.�أ�i playing football now.������һ����䡣I am playing football now.Playing as you are,...........