大学英语作文中常用的句型包括：
以单个修饰语作为句子的开头
例如：Young and ambitious, JieYu works hard to teach English.
以同位语作为句子的开头
例如：The most popular teacher in Neworiental, Ma Zihui, will attend the party.
以短语修饰语作为句子的开头
例如：In front of me stood a beautiful girl.
用从句作为句子的开始
例如：While many people attach great importance to this issue, no real effective actions have been taken to solve it.
提出问题或现象的句型
例如：Nowadays, it is common to hear/see...
阐述不同观点的常用句型
例如：Although more and more people come to believe..., there are still others who insist that...
陈述个人观点/想法的常用句型
例如：In my opinion, both sides are partly right in that...
开头句型
例如：As far as...is concerned, it goes without saying that...
万能句子及模板
例如：I am writing to you to...
这些句型可以帮助你在写作时更加流畅和有力地表达思想。建议在实际应用中，根据具体的写作内容和目的选择合适的句型，并注意句子的连贯性和逻辑性。