请问这里为什么要加to呢?parents aren't around to say,"No,you're not going out tonight."

请问这里为什么要加to呢?parents aren't around to say,No,you're not going out tonight. It is time (to watch)CCTV news.请问这里为什么要加to呢? Yes.I'm having dinner with my parents tonight.请问这里have为什么要加ing呢,我今晚要跟我父母吃饭,我觉得I'll have dinner with my parents tonight.这样才对, When are your friends returning to Italy?请问这里return后面为什么加ing呢? i love to bake为什么这里要加TO呢?不加TO与加TO有什么分别 My mother wants me to drink more milk 请问为什么这里要加to啊? she was three when her parents immigrated to america in 1999这个为什么要加to呢 什么时候要加to? we must arrive there before day breaks.请问这里的 break为什么要加s?请问这里的 break为什么要加s?它强调的是什么呢? sarah was seriously ill请问为什么这里“serious”要加“ly”呢? Winter vacation goes to the Harbin traveling这里的go为什么要加es呢? 请问,being在这里做什么成分?strangely enough,some famous scientists have the qualities of being both careful and careless.请问这里为什么要加being呢 Observe means to find out information.请问这句话是什么结构?为什么要加to呢? I love to you do fried egg.句子中为什么要加do呢?这里为什么要加do呢,fried不就是行为动词吗 I intend to be a good student.这里的intend是及物动词,为什么要加to啊?那为什么要加动词不定式呢？ It's colder today than it was yesterday.请问这里为什么要加it was呢,去掉可以吗? They are the same.请问为什么要加the呢?这里的same是形容词吗?还是名词? students are expected to have their own ideas and not just repeat what the teacher has told them.请问 这里expect为什么要加ed tell 为什么变成told呢 （语法白痴） to waste time is to idle away one's life ,请问,这里的是“to”什么作用,为什么要加to.