It's up to sb to do sth能翻译成 做某事是某人的义务或责任 吗

Question

顺便给几个例句

Answer 1

1. 可以。

2. 固定句型It's up to sb to do sth一般有两种意思：
1）由某人决定去做某事
如：It's up to you to decide how to get there.
由你来决定怎样到达那儿。
2）做某事是某人的义务/职责/责任
如：It's up to her to lock the door.
锁门是她的职责。/锁门由她来负责。

参考资料：英语牛人团团员

Answer 2

不能。

应该翻译成，是由某人决定来做某事。

例句：
It's up to you to decide how to get there.怎么去那里这件事由你决定。

-Where shall we go?
-It' up tp you.
-我们要去哪里？
-你来决定。

Answer 3

能 It's up to us to help them.（帮助他是我们的责任）

Answer 4

做某事某人说的算
一般只用It`s up to sb就可以
-What do you want to tomorrow?
-It`s up to you
-你明天想做什么？
-你说了算

Answer 5

由某人来决定做某事
It's up to my father to buy it.
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