I want to change it.

我想改变它。

I need to change it.

我需要改变它。

If it doesn't sound real, change it.

如果听起来不真实，就改一下。

Keep your receipt for the book in case you want to change it.

保留你的书的收据，以防你想换书。

The opening is done for you, but you can change it if you like!

开头已经为你写好了，但你可以改动它！

Since you don't like this one, let's change it.

既然你不喜欢这个，我们换一个吧。

She sticks to her plan and refuses to change it.

她固执地拒绝改变自己的计划。

Anyway, he doesn't like this movie, we can change it.

反正他不喜欢这部电影，我们可以换一部。

This bulb is not light enough; we need to change it.

这个灯泡不够亮，我们需要换一个。

This trouser belt is too tight; I need to change it.

这条裤带太紧了，我需要换一条。