我长大要当老师 ----- 文法问题

Question

I want to be a teacher when I grow up 还是
I want to be a teacher when I grew up

还有一句
I would help more poor people if I became rich 这句文法对吗?
如果我成为了富翁，我会帮助更多的穷人

应该用
I would help more poor people if I became rich 还是
I will help more poor people if I become rich .

Answer 1

应该是I want to be a teacher when I grow up 。因为我长大要当老师，我还没长大。所以，“当我长大时”这个从句不能用动词的过去时grew.只能用一般现在时grow.
因为 when引导的时间状语从句用一般现在时表示将来的动作。

其实两句话都对。不过从你问的问题来看，你还没学到虚拟语气。那么，为了避免你的混淆。你就选这个句子。肯定对。
I will help more poor people if I become rich .
是正常的语气。当我变富后，我会帮助更多的人。变富和帮助人都是将来的动作，所以主句用将来时will。不过 when引导的时间状语从句用一般现在时表示将来的动作。所以这句话对的。

Answer 2

I want to be a teacher when I grow up这句对的。
后面一句不对，因为是主将从现所以是I will help more poor people if I become rich .

Answer 3

I want to be a teacher when I grow up

I would help more poor people if I became rich对的
如果我成了富翁，我要帮助更多的穷人，

Answer 4

I want to be a teacher when I grew up
I would help more poor people if I became rich

Answer 5

第一句对
became改为become,因为过去式用于发生在过去的事，现在没发生

Answer 6

第一句对的，不过最好的表达应该用become。
第二个句子完全是对的，此为虚拟语气。
句式（就按照你的句子说）是，主句：I+would+动词原形
从句：if+I+动词过过去式 .
翻译：如果我成为了富翁，我会帮助更多的穷人。