变为被动语态:The student should learn all the text by hearts.变为被动语态:1.The student should learn all the text by hearts.2.Have they posted the letter yet?翻译：1.那个婴儿被照顾得很好.2.为什么英语被广泛试用.
问题描述：
变为被动语态:The student should learn all the text by hearts.
变为被动语态:1.The student should learn all the text by hearts.
2.Have they posted the letter yet?
翻译：1.那个婴儿被照顾得很好.
2.为什么英语被广泛试用.
答
All the text should be learned by heart by student.
That baby is cared well
被动语态是一种表达方式，实际上汉语里面也有，只不过我们不太注意。比如说窗户开了，实际上是窗户被打开了。英语的被动语态被广泛应用还有一个重要的原因就是用于强调。比如你的这句话，前一句The student should learn all the text by hearts是：学生需要用心读所有的课文。而被动语态是
All the text should be learned by heart by student所有的课文都必须用心读。这里面的细微区别你能看出来吧。
答
1All the text should be learnt by the student by hearts.2Has the letter been posted by them yet?The baby is looked after well.Why is English widely used?