to do sth为不定式的主动式,表示主动含义,这里any type of physical activity you choose to do中,陪汪you为to do 的发型州出者,故是主动的。
torn pieces of paper were everywhere to be seen中torn pieces of paper 为see的承芦租仔受者,故是被动的,因而用被动式。
to do 是主动语态,宏基一般是sb to do sth.
to be done是蔽此谨被动语态,扒历是sth. to be done (by sb.)
to do 不定式,宽乎这里choose to do 表示主动,选择去做雀闷某事慎岁悉
to be done是被动式, to be seen这里表示被看见
希望对你有帮助哦~
to be done是被动啦,主语一般是物了。 to do 一般是固定句型里面的.