.He is the tallest student in his class改同义句 在线等

1.He is the tallest student in his class.
= He is taller (than any one of the other）students in his class.
2.翻译：我们筹钱的目的是帮助灾区.
应该不是一空一词吧?否则第二种变化无法变化.
①= The money (raised)/(raised by us)/(we raised) is to (help) the people in disaster areas.
②= The money (raised is)/(raised by us is)/(we raised is) for (helping) the people in disaster areas.
注：we raised前面还可以加上which/that；/ 表示可以任意选用其一.