英语不好，帮翻译几个句子

since he has had a cellphone,he no longer writes to his friends!

even though he is busy,he spends at least two hours on the Internet to learn the new trends of this field.

Mr.Li made a short speech on the graduation ceremony ,and his words was deeply impressed upon me!

1.自从有了移动电话后，他再也没有给朋友写信了。
With the mobile phone, he never wrote a letter to a friend
2.尽管很忙，他每天至少花两个小时上网，了解这个领域的最新动态。
Despite the very busy every day he spent at least two hours online to find out the latest developments in this area.
3.李教授在毕业典礼上作了一个很简短的讲话，他的话深深铭刻在我记忆里。
Professor Li made a graduation ceremony in a very short speech, his words etched in my memory.
ok!

1.自从有了移动电话后，他再也没有给朋友写信了。(no longer)
Ever since there is mobile phones, he has no longer written letters to his friends
2.尽管很忙，他每天至少花两个小时上网，了解这个领域的最新动态。（even though)
Even though he is very busy, he still spend more than 2 hours in surfing the web/net.
3.李教授在毕业典礼上作了一个很简短的讲