英语结构问题they begin to mute their vioces,not be as assertive.这个not be as assertive是作什么成分,它是省略句吗?

英语结构问题they begin to mute their vioces,not be as assertive.这个not be as assertive是作什么成分,它是省略句吗? Most American children begin to go to school when they are five years old 问题补充里还有同意句Most American students begin school ( )the ( )of five they begin to read storybooks ,anything theythey begin to read storybooks ,anything they like翻译 To begin with,many people suggest that.to begin wiht怎么翻译什么结构什么搭配? 请帮忙分析一下这个句子的结构：They begin to think about what use could be made of such materials? he begin to write his homework 是什么结构? They ____(begin)to read the new words then They begin ----- at 8:00.A.working B.to work begin to to begin 英语固定结构问题too...for sb.to do sth they begin to feel bad.为什么要用to 还有begin和feel哪个是谓语谢谢 一句英语的语法结构和意思To begin at the bottom,what are our very senses themselves,but organs of selection? stopped and looked curiouslyand when they begin questioning youland on which they wereand to love 有个英语begin的用法不大清楚,英语begin有begin to do sth.和begin doing sth.其中的区别是什么,有什么用法? 【英语造句】Tomorrow ,my future is about to begin .请问：Tomorrow ,my future is about to begin .我这样造句有什么问题吗?有更好的表达方法吗? 一个英语问题：是They are helpful for me还是They are helpful to me They waited silently____ A.for the film begin B.when the film begin C.to the film begin D.for the f