to do 短语To be a good student,he never goes to school without
to do 短语
To be a good student,he never goes to school without preparing his classes.这句话对吗?
to do短语,可以作为目的状语放在句首吗?
in order to do呢?
还是只能是动词的ING形式,放在句首做状语?
Beijing a good student,he never goes to school without...