I would echo Christine's answer. It usually has a negative connotation. It's meant to sort of say, "This woman's life is so comfortable that the only important thing she has to do is take her kids to soccer practice." It's meant to jab at the privilege and comfort of a suburban, middle-class lifestyle that is insulated from a lot of the hardship other people face.

"I have no cats" is correct and understandable. Though, I would say, "I do not have a cat." I think "I have no..." is a bit more dramatic. It emphasizes the "no" and makes it feel tragic or sad, whereas "I do not have" is more neutral or factual. I would use "I have not..." to talk about an action; for example, "I have not seen that movie."

About travel

I‘m sure a lot of people interesting in travel,. [Do you mean "a lot of interesting people travel"? or "a lot of people meet while traveling"?] Someone [Just one person? Or do you mean "Many people"?] have a dream of traveling around the world. Me too. I always think theat life is short, keep contact [who or what needs to keep contact?] with the larger world as far as you can, then the life wouldwill be meaningful.

If you don't go out to see the world, you'll consider as this [what is 'this'? -- the city or country you live in?] isas the world. I haven’t enough courage to go to the first step of traveling alone, until I met thea man on QQ. He is a traveler,. I told him I want to travel like him, but I haven't enough money and I'm afraid of danger since I just graduated from high school. He told me many interesting travel stroryories and gave me a lot of courage and methods, like Aalways keep alert alert and treat others friendly.

I stayed up all night and thought a lot. The second day, I set out. I fFormally started hitchhiking alone. In that holiday, I climbed over the Tibetan Plateau and Tanggula Mountains, I went to Northwest of China and saw the desert,; everything is so amazing. The most unforgettable thing is to make a lot of friends.
A journey brings me is not only the beautiful scenery, it makes my mentality changed greatly, lets me grow up in the imperceptibly. tThe more you know, the less you know.
So, when you're young, go to see the world. sSomethings, if you don't do itthem now, you will never do itwill.

 

Wonderful story! It's incredible how traveling and learning new languages can increase our understanding of the world and what exists. Your courage to travel gives me courage too!

A raining day

Rain Rrain go away, but [1]you come back inat another time with your grey sky,.

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[1] Are you asking or wanting the rain to come back? Or just stating that it will?

Heavy traffic jam

I am on the way to meet my friend., Bbut the traffic situation is not good. Many cars are stucked on the road. I am suffering fromin the traffic jam! I think i am going to be late...

In kKorea., Ssummer is almost gone and Aautumn is coming.
I can feel athe changing weather when i wake up in the morning. I have a sore throat, .henceso i wear a blue jeans and a pink long sleeve sweater. Everybody watch out [1]for the cold.

Explanation of some corrections:

- When you start a sentence with a conjunction (and, but, yet, so, etc), it sometimes works better to combine it with the previous sentence. I thought it read more smoothly to do that with your first two sentences.

- The past tense of "stuck" is also "stuck"; it's an irregular verb.

- It sounds unusual to say "I am suffering <em>from</em> traffic jam." Usually "suffering <em>from</em>" is used to talk about having an illness. I understand why you used it, but in this case, it makes the traffic jam sound like an illness, haha.

- Seasons (fall, autumn, spring, winter) are not capitalized.

- "Hence" is somewhat formal, and usually used when making an argument.

The end

This is not a trip but a incredible memory. I never knoew it would be a big change for me. I met many people in my trip, especiallyincluding two Honkong girls from Hong Kong. We met in 宜蘭 at first. We had a nice conversation. Then we continued our own trips. But we met in 花蓮 again. It was an unbelievable destiny. We also had a nice memory in 花蓮. I think I will never forget [1]you. You appeared in my bad time. You gave me a incredible experience so that I was really happy and forgot all of sadness. I believe we will meet again in someday. I will really miss you. This is not the end, but a start.

 

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What a nice memory. How fun to meet someone special and run into them again.

 

[1] When you start using "you," it tells me as the reader you are talking directly to the girls. But since you weren't before, it creates a shift. It might be helpful to create a new paragraph there so the shift feels more natural.

Robots in our life

A Ccentury ago, nobody could imagine that there would be machines which can replace human activity in such a vast capacity as we face it today. Since the microelectronic and nanotechnology development is proceeding inat a rapid pace, it's evident that in closestthe close future [1]lifestyle will change.

 

[1] It would helpful to specify whose lifestyle