>> An old lady was walking around a department store. When you say “walking around a store” this means walking inside the store looking around. (This is different than “walking around a car” which means to walk in a circle around the car.) So if you want to show that the lady was walking around outside of the store, and only went in because it was raining, then you can say “An old lady was walking by a department store.” >> It was raining. She walked into the department store. You probably want to connect these thoughts. “It began to rain, so she entered the store”. >> The clerks paid no attention to her. OK >> A young clerk came to her with a chair. This is ambiguous. Did the clerk offer a chair for her to sit down? Or did the clerk bring her a chair because she was shopping for a chair? If the clerks didn’t notice her, then how did one of them bring her a chair? >> The old lady took a business card from him. To take something from him emphasizes that she took it rather than he gave it. Instead say “The clerk offered her his business card.” or “She accepted the clerk’s business card.” Also, since we only have 2 people, the old lady and the clerk. So you don’t need to say “the old lady” again. >> Some days later, the president of the department store recieved a letter from the old lady. (Typo - should be “received”. There is a rule “I before E except after C”) “A few days later…” would sound better than “some days”. This sentence is ambiguous. Did the woman thank the department store for a chair to sit in? Or was she angry that no one paid attention to her? >> She was the mother of Andrew Carnegie. >> Andrew Carnegie was the richest person of the day. This is grammatically correct, however it is a weak ending to the story. You could say “Only then did the department store president realized that the old lady was the mother of Andrew Carnegie, the richest man at that time.” Hope this helps!

I don't believe there's any mistakes but your fluency is choppy and you have the old lady walking inside a department store but in the next two sentences she's outside and has walked in. If your sentences aren't in any particular order then it's fine but if this is a whole paragraph I believe this should be better: 'It was raining. An old lady walked into the department store and walked around for awhile as the clerks paid no attention to her. Eventually, a young clerk brought her a chair and the old lady took a business card from him. Some days later, the president of the department store recieved a letter from the old lady. She was the mother of Andrew Carnegie, he was the richest person of the land.' (I have put land because I don't understand what you mean 'of the day'. Was he rich for that day only?) If you want to say he was the richest person of a certain scale, you could say "He was the richest person *in* the town/country/city/village e.c.t..." Oh! The use of 'A' and 'The'. I don't know how to explain, I was never thought just learn as you grown up but I'll use an example and try. A dog is barking non-stop! The dog is barking non-stop! 1) The use of 'A' here brings less personal attachment to the subject. It's just one dog that they can hear barking. It may be the first time they've encountered it. 2) The use of 'the' brings forth some sense of familiarity in this sentence as it could be their dog or a dog that has been there, gone and come back again. I have also found an article here for 'an, a and the'. It willprobably explain WAAAAY better than me. The familiarity part is in there though so I didn't do that bad! http://esl.about.com/library/beginner/blathe.htm Please anyone correct me if I've made any grammatical errors.

Sellymoo's answer is good, except for when she was correcting your sentences, it should be "She was the mother of Andrew Carnegie; he was the richest person of the land." The semicolon should be used rather than the comma because there are two independent clauses (like complete sentences) but no conjunction is used to divide them (She was the mother of Andrew Carnegie....He was the richest person in the land) Anyway, to help with when you use them, "a/an" could be anything in the world. If I said "A dog walked down a street." it could be any dog and street in the world. For all I know, it could be across the world, but it could also be the street I live on. If I said. "The dog walked down the street." I'm using a particular dog and a particular street.The is used for something that both the speaker and listener know which object (in this case, dog and street) they're talking about. Here's another example. If I've set out three plates for you, and I say "Grab a plate." you may respond, "Any plate?" because I haven't been particular. In saying "a" I've implied any of the plates, it just has to be one of them. If I say "Grab the plate." you may ask "Which plate?" because I've said the. I'm talking about a specific plate. Another thing: a/an are singular. The can be used for multiple objects. Ex. Grab a plate. ---> Grab plates. Here, a/an is taken out because we're talking about multiple plates. This example can mean just some of the plates. You may ask "All of them or some?" Also, if I hadn't set out the plates, it could be any plates you're getting. I didn't a certain type of plate. Grab the plate. ----> Grab the plates. Here, the means you grab all of the specific plates I've set out. If I hadn't set out the plates, you would be getting certain plates. You may ask "Which plates?" Do you understand? If not, message me and I can help.

Since you have answers for you main question all I will say is "Are there any errors in these sentences?" works much better...

I think it's correct.