例如 I didn't do it and 动词加过去式还是原形?

例如 I didn't do it and 动词加过去式还是原形? didn't 后面接动词原形 还是过去式 I was 后面加动词原形还是过去式 I 记住的过去式 后面要加动词是加原形还是什么? do后面用动词原形?还是Don't后加动词原形?所有句型都试用么? when we 后加动词原形还是过去式 understand后加to 动词原形还是动词过去式,还是直接加动词ing. isn't it(she/he)前面的动词是原形还是加什么形式 would 后面是加to do 还是加动词原形? It's not right 后面加动词原形,还是动名词或者加to+动词原形 do well in后面是加动词原形还是ing why not 是加to do sth. 还是 动词原形