I suppose you are asking whether the Chinese sentences are right or not. The second sentence "在我全生命中我从来没说谎过" should be put in this way: "我一生中没有说过谎话。"

Be careful not to catch a cold!! Take medicine and have a good rest.

"How many languages you know?" - 몇 개 국어를 할 줄 알아요? "I speak 4 languages." - 4 개 국어를 할 줄 알아요.

숙제가 많이 있어요. (homework a lot of have) 저는 is always omitted when the subject "I" is understood. The part "to do" is also omitted here because the meaning of "to do" is also understood. For your reference, if you want to say "I have to do a lot of homework", then you have to use 해요. 숙제를 많이 해야 해요.

My native Korean teacher taught me to reply in this way: "천만에요". Hope this will help!

"I will come soon." - すぐ行きます。(sugu ikimasu) "I will get back soon." - すぐ戻ります。(sugu modorimasu) Hope this will help!

如果你有心爱的人。。。

1. 每个人的生命中都会有这么一个人。
一个让你变得更幸福的人。
我也有这样的人。 

其中有几个人会知道我的心意，但剩余的就连有我这个人都不知道。 

我一辈子都不会告诉对方自己喜欢他，这也是单纯的生命中的一种。 

2. 我有一个习惯，
就是刚开始喜欢上某人时，会在纸上写下喜欢他的理由。 

然后， 
当对他的感情感到疲惫时，便把那张纸拿出来看一看。 

这样，一切问题就会迎刃而解。
你们也试试吧！

 

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只作了少许修改，另外有一句不太明白。

그래도 중국어 잘 하시네요! 화이팅!!