What is the polite expression in a restaurant? Last summer, I went to Sydney. I ordered some dishes and enjoyed them. Meanwhile, I needed some plates to share foods. So I called clerk "Here!" A company said it might be not polite expression. What should I call the clerk? Maybe "Hello" ? Thanks.

For "A is a drop-in replacement for a B" what is 'drop-in'? How are you guys? I have a question of 'drop-in'. I found this sentences from a book. The sentence is "A is a drop-in replacement for a B, the only difference is that As are ....". From those sentences, I infered that 'drop-in' might be meant small or just some part of. Am I right? Or it means just drop by? Thanks for your time.

How or where can I learn situation english? I heard there is the term 'situation english' as order drink at pub or food at restaurant. I am not sure that the term is 'situation english' though. Is there any book recommendation about it or just I should see many TV shows?

Could you tell me whether it is adjective or verb at a sentence, “The mall is located…” Hello. I am reading a vocab book to learn English. There is a example sentence. That is, "The mall is located his client's long-lost cousin in Mexico." At the sentence, the 'located', I was sure it was adjective. But my colleague said, it is verb, because 'located' is not only adjective, it is also P.P. + verb. So it is verb. I would like to make it sure. Thank you very much for your help in advance.

I don't get a sentence. "The A operation can be combined ... Hello. My name is Woonghee Lee. My major is the computer science and engineering. I changed it from the industrial and management engineering when I got into gradschool. I was reading a paper to present at a seminar in my lab. But I didn't get a sentence. That is "The A operation can be combined with other operations in certain cases (e.g., join), resulting in little additional cost to compute the A." It is related with the database. I am confuesed to get the sentence after ", resulting". I thought it meant "If the A operation is combined with other operations, it causes little addtional cost to compute the A". I would like to know if I am right. Thank you very much for your help in advance.

I am confused to get a sentence "A contains all tuples whose value of attribute D is btter ....". How are you? I am read a paper which is related with computer science. During reading, I am confused to get a sentence. "A contains all tuples whose value of attribute D is better (e.g., less) than M." I am confused because of the e.g. in the parenthesis. I think D is better than M but what does mean e.g., less? Thank you very much for your helping in advance.

I don't get what this senstence means "Common mistakes like these will separate rushed, shoddy... How are you? When I was reading a paper, I got this sentence that "Common mistakes like these will separate rushed, shoddy work from the truly excellent." I thought it meant that "Common mistakes will cause that the truly excellent will be shoddy work". I am not sure whether I get it right or not. Thank you very much for your help in advance.

If someone says, "Your design is too flat". What does it mean? How are you? I have talked with my professor few hours ago. He said when he was at USA, one of his friend was in difficult, because his friend's professor who is PhD advisor said "Your design is too flat". His major was the science of architecture. I wonder what is the "flat" mean. Is it just flat literally? Thank you for your help in advance.

Today's writing2: What do you want to say? 5. Counsel your friend to stop smoking. Tell him both why and how. Hey. You still haven’t quit smoking. You promise me you will quit smoke very soon. I thought you join quit smoking clinic. I may be disappointed. You don’t keep your appointment. We will go to quit smoking clinic afternoon. See you after the class. 6. How would you advise one of your parents to exercise more? Pa and ma we promise we would go to travel more than 10 times this year. We have Korean new year after a month. I booked a travel package for the days. The program includes hiking. I believe it will be fun. And you have high-end hiking stuffs. We will go to hike at the days after then we will go to hike every weekend. 7. Tell your boyfriend(or girlfriend) to be sure to carry a good sunscreen on his or her summer vacation. Honey, have you ever heard that the ozone area has been corrupted since 10 years ago. As latest studies result, at this summer it will be most thin ever. So ultra violet will hurt your skin. I think your skin is so thin. So I would recommend you should carry a good sunscreen on your summer vacation. 8. Tell your classmates not to give up English. I would like to some methods to improve English skills. In the past, we usually focused on reading, I mean just understand what writing saying. It was focusing on interpreting in Korean. I think it isn’t learning foreign language. I think it is the reason why, even though you memorize vocabulary everyday so hard, you are not fluent to speaking and listening English. Listening, writing, reading, speaking, those are so important. So try them every day.