Shanghai

Last month, I went for a business trip to Shanghai.
The night view was very beautiful.
I can't speak English and Chinese very well.

-- If you written you can't speak, that means you really cannot speak a single word!

But you can! So you may add "very well" to express your level of expression.

Don't worry, you'll get there!

It was very hard to speak.

--"I was very hard" means that you are made from something hard like stone?

--It was very hard to speak is to make the sentence complete.

--It I were to write, "It was very hard", the sentence would not be complete.

--And by adding to speak allows other to understand what was the "hard" about!

I think, I will study English.

--When you mention I will study English, you are already thinking about it. :)

--So the word "I think" is not necessary.

A kind friend told me the italki.

--Is that one friend? You may add a  infront.

--gentle in this context means lady like I guess? Very feminine.

--But I guess you meant "a kind friend" instead.

--Because a kind friend who is the type of person who would help others.

--A gentle friend acts in the way of mannerism. That maybe she is gentle when she speaks/acts to other (very politely).

I think I appreciate her, and trying to learn English.

Yes you can. You can do it. Let's learn English!

You can express at least the main idea out, you just need to polish it and then it will be perfect. 

--JK

Last month, I went to a business trip to Shanghai.

たとえば,

I went to a party＝パーティに行きました。

Ι went to a cafeteria=カフェに行きました。

a はひつようです。

The night view was very beautiful.

The sky was beautiful etc.

Please use the. The= この、その、あの。

I can't speak English and Chinese very well. 英語と中国語があまりはなせません。very wellはあまりみたい、とおもうよ。

It was very hard. It=speaking english=話せること

I think, I will study English.　とおもう＝In English means you are not sure.

A Gentle (kind) friend told me about italki.あたし？ｗｗｗありがとう～

I think I appreciate it, and trying to learn English.

You can use this expression。。。

Thanks, i appreciate it!

it's usefull! べんりだよ！

good job!!!! bravo!! ^^ がんばってね＾＾

Shanghai

Last month, I went to business trip to Shanghai.

Last month, I went on a business trip to Shanghai.

Night view was very beautiful.

The night views were very beautiful.

The city was very beautiful at night.

The views of the city by night were very beautiful.

I can't speak English and Chinese. I was very hard.

I can't speak English or Chinese、so the trip was very hard for me.

I think, I will study English

I think I will study English.

I decided I wanted to study English.

Gentle friend told me the italki.

A kind friend told me about italki.

I think I appreciate her, and trying to learn English.

I am not sure of you meaning here, but maybe:

I appreciate her advice, and so I am trying hard to learn English.

Good work, well done! 頑張ってね！