Expressing Changes With 改变，变化，变得，变了，变成
As we start looking at the examples below, I want to establish a notion: the word "change" is a little different in Mando -- we actually have a few different words that will each take on a different purpose for saying "change". Those are:
变得biànde -- becoming more of an adjective
变化biànhuà -- this is the general noun for "change/changes"
改变gǎibiàn -- usually, we will use this verb to say A "changes" B
("I changed my mind", "let's change the world!", etc)变了biàn le -- This is usually for simple situations where "something changed"
变成biànchéng -- Think of this as A "Changes into" B
NOTE：It will take some time to get used to, but each of these "change" words are very different in how they are used. Remind yourself to be patient with yourself, since this is pretty different from English! =)
1.变得biànde：to Become
1）[verb phrase/noun phrase] 让ràng+subj+变得biànde+ intensifier+adj
yùndòng huì ràng nǐ biànde gèng jiànkāng.
运动会让你变得更健康。
Exercise will make you healthier.
měitiān dú yīhuìr shū ràng nǐ biànde yuè lái yuè cōngmíng.
每天读一会儿书让你变得越来越聪明。
Reading a book for a while every day makes you smarter and smarter.
2）Subj.+变得biànde+intensifier+adj
rúguǒ nǐ chī hěnduō hànbǎo，dànshì bù yùndòng，nà nǐ huì biànde hěn pàng.
如果你吃很多汉堡，但是不运动，那你会变得很胖。
If you eat a lot of burgers, but don't exercise, then you will become fat.
yīnwèi nǐ měitiān xué zhōngwén，suǒyǐ nǐ de zhōngwén biànde yuè lái yuè hǎo le.
因为你每天学中文，所以你的中文变得越来越好了。
Because you learn Chinese every day, your Chinese has become better and better.
2.变化biànhuà：Change
can only be used as a noun
wǒ yǒudiǎn nán xíguàn zhèxiē biànhuà。
我有点难习惯这些变化。
It's a little hard for me to adapt to these changes.
suīrán wǒ líkāi Seattle shí nián le，dànshì wǒ juéde Seattle de biànhuà hěn xiǎo。
虽然我离开Seattle10年了，但是我觉得Seattle的变化很小。
Although I've been away from Seattle for 10 years, I think Seattle has changed very little.
zhè yīnián，nǐ de xiǎngfǎ yǒu shénme biànhuà ma？méiyou biànhuà.
这一年，你的想法有什么变化吗？没有变化。
Have your thoughts changed at all this year? No change.
（think of this as, "do your thoughts have any changes?")
3.改变gǎibiàn：to Change
改变gǎibiàn -- The general word for change
wǒ gǎibiàn le wǒ de xiǎngfǎ，wǒ xiànzài juéde yòng hōnggān jī hěn fāngbiàn.
我改变了我的想法，我现在觉得用烘干机很方便。
I changed my mind and I now find it convenient to use the dryer.
Rúguǒ nǐ qù bùtóng de guójiā lǚyóu, nà nǐ de xiǎngfǎ huì gǎibiàn.
如果你去不同的国家旅游，那你的想法会改变。
If you travel to a different country, then your mind will change.
4.变了biàn le：Changed
hǎojiǔ bù jiàn，nǐ biàn le hǎo duō！
好久不见，你变了好多！
Long time no see. You changed a lot!
subj+变biàn+adj+了le
tā de tóufà biàn cháng le.
她的头发变长了。
Her hair has become longer.
Suīrán nǐ zài měiguó zhǐ shēnghuóle bànnián, dànshì wǒ juédé nǐ biànle hěnduō, nǐ biàn dúlì le.
虽然你在美国只生活了半年，但是我觉得你变了很多，你变独立了。
Although you have only been in the US for half a year, I think you have changed a lot and you have become independent.
5.变成biànchéng：to Change Into; to Turn Into; to Become
subj+变成biànchéng+noun.
Rúguǒ nǐ měitiān xuéxí, nàme nǐ huì biàn chéng yīgè yōuxiù de rén.
如果你每天学习，那么你会变成一个优秀的人。
If you study every day, then you will become an excellent person.