Presentation in 10 Hours I have a presentation in the next 10 hours. I have to present it in English and I am very nervous for it. It is a group presentation for 3 people. Everyone has 3 mins. I just started to prepare it few hours ago. I know for a English native speaker, it is not a big deal. But for me, I am afraid that I can't speak it very fluently. I have practiced it a lot of time but I made mistakes everytimes. Although I think I can take a note during presentation, I can't just read it all the time and lower my head, can I? But everytimes I raise my head and try to recite the content, I always forgot it and seem like a stutter. I always say ' En.... And... A....En.... And...' something like that. I think if I raise my head to look at audience, I will be worse that what I do right now. Here is my note: Today I want to talk about 3D printing and 3D modeling. What is 3D printing? 3D printing refers to create a three-dimensional object by laying down successive layers of material. So how does the 3d printer work? Well, it is quite similar to a normal printer but a little bit different. First, we don't need to put an ink cartridge into it, but instead, we need special printing materials, like plastic, rubber, or even a matel. We don't print a boring text document, but a 3d real life model which you can make it in your own computer. 3D printing is also called additive manufacturing. In our traditional industry, we always use subtractive manufacturing. So what is the difference between these two things? As we can see in the picture, Subtractive manufacturing removes materials and Additive manufacturing adds layers of material. So next, I want to talk about its application. In medical world, 3d printer can be used to print some special biological materials like hearts, ears, bones and skins. 3D printing is also very popular in fashion world. There is a fashion designer who is able to use 3d printer to print a sunglasses. And he put it on his models on fashion week. In the future, maybe s 3D printer can be used to print another 3D printer. That will be pretty cool!!!!

Rejected by a Graduate School I was just informed that I was rejected by a graduate school which I thought I had great chance to get in. I was very depressed and I really want to know the reason. So far I have been rejected by two graduate school. What should be the next step for me? I have been studying English on italki for almost 1 month, but I haven't seen any progress. I am taking a class at school for 3 hours every day, so I don't have too much time to dedicate myself to English. I am not happy.

I Helped My Friend Move This is just a short essay for what happened on my weekends. Yesterday, I helped my friend move to a new place. We rented a Uhaul, but it is not big enough. She has a lot of things like bed flame, mattress and bookcase. We came and backed three times. When I walked in the elevator, I was holding a lot of things in my hands. I wanted to ask other people to push 5 for me( or ask other people for pressing 5, which one is correct? ), so I said ' Would you please press 5 for me? Thanks.' And when the elevator stopped and opened on the 2ed floor, I did a very stupid thing that I went out by mistake. I didn't notice which floor it definitely is.(Should I use the word 'definitely'? If not, which word should I use?) When I noticed that this is not the floor I pressed, I suddenly turned back and nearly hit the person who was supposed to go out on the 2ed floor. I saw him smiling at me. I thought I needed to say something, but I didn't. So does someone could tell me what reaction should be for this situation? What should I say? Maybe I should smile at him and say ' Oops, wrong floor.' I was very tired and exhausted yesterday. When I waked up this morning, I felt hurt on(not sure for this word) my arms and wrist. I mean the the muscle on my arms and wrist hurted. So I stayed at home and watched some movies and TV shows on my bed all day. Tomorrow, I have to go to class. I really don't want to go to class. I have one more question, If I want to introduce myself in email, what should I say? 'Hi, This is Katie from xxx. ' or ' I am Katie. ' or ' My name is Katie.' Thank you for reading my essay. I am looking forward to your response.

how to improve my vocabulary? I stayed 4 years in the US but I still can't speak English very fluently. I think my problem is vocabulary. I have a very very very bad memory. I can't remember things as usual people. I always forget things happened. I may learn a lot of knowledge in one class but I forget most of them when I finish it. I don't know if there is a good way to improve my memory and vocabulary. I will graduate in August but I haven't find a job. I am very upset and I feel like I was wasting 4 years studying in such a top university. Also the tuition fee of these 4 years is not low. If I want to continue staying in California, I need find a job or I have to go back to China. Maybe I have another choice which is to go to graduate school, but the cost for graduate school is also expensive. I am very confused with life and future. I don't know how to choose and I don't know what should I do. I really really want to find a job right now. And only speaking like a native I can find a job. I am just complaining. Does anyone could give me some good advice? I lose confidence with life I think.

First Essay at italki I was born in Beijing and now I am living in California. I came to America going to University. My major is statistics. Although I study in the US, I am also very shy to speak English with native speakers. I always feel nervous.