1. Loose 和 lose
錯(cuò)：I always loose the product key.
對(duì)：I always lose the product key.
2. It's 和 its (嚴(yán)格拼寫是 its')
錯(cuò)：Download the HTA, along with it's readme file.
對(duì)：Download the HTA, along with its readme file.
錯(cuò)：The laptop is overheating and its making that funny noise again.
對(duì)：The laptop is overheating and it's making that funny noise again.
3. They're 和 their 和 there
錯(cuò)：The managers are in they're weekly planning meeting.
對(duì)：The managers are in their weekly planning meeting.
錯(cuò)：The techs have to check there cell phones at the door, and their not happy about it.
對(duì)：The techs have to check their cell phones at the door, and they're not happy about it.
4. i.e. 和 e.g.
錯(cuò)：Use an anti-spyware program (i.e., AdAware).
對(duì)：Use an anti-spyware program (e.g., AdAware).
注：i.e. 意為“that is”；e.g. 意思是 “for example.” 二者后面都要加逗號(hào)。
5. Effect 和 affect
錯(cuò)：The outage shouldn't effect any users during work hours.
對(duì)：The outage shouldn't affect any users during work hours.
對(duì)：The outage shouldn't have any effect on users.
對(duì)：We will effect several changes during the downtime.
注：Impact 不是動(dòng)詞。你可以考慮用 affect 來(lái)代替：
錯(cuò)：The outage shouldn't impact any users during work hours.
對(duì)：The outage shouldn't affect any users during work hours.
對(duì)：The outage should have no impact on users during work hours.