to do sth是to do是谓语呢,还是do是谓语呢?

to do sth是to do是谓语呢,还是do是谓语呢? seem to do sth. 谁是谓语? 是want to do sth and do sth还是want to do sth and to do sth? 是tell sb.not do sth.还是tell sb.not to do sth.那么ask呢? must 后面是加to do sth.还是do sth. 是should to do sth 还是 should do sth? 是can to do sth.还是can do sth. it 后面动词是do sth.还是to do sth. 是take action do sth还是to do sth? 非谓语动词里有是to do要么是doing要么是sb to do sth的形式,感非谓语动词里有很多要么是to do要么是doing要么是sb to do sth的形式,感觉好复杂,有没有好的方法去掌握呢,记得话很容易忘啊,还是靠做 关于两个英语句子的成分分析1.he is too excided to speak 中,to speak是一个不定式,可是此不定式充当什么成分呢?2.he was seen to do sth 中,was算谓语吗?seen是什么成分?to do sth 还有就是，I do know 谓语是do do sth to do want to do是合成谓语吗 like sb 【 】 sth是to do 、doing? 是advise sb.to do sth. 是go out to do sth. ( )to do sth是副词还是形容词 to do sth.是动词不定式吗?