2020湖南专升本网整理：专升本英语语法之用to do sth表目的

用to do sth表目的
用不定式表目的是最简单也是最常用的方法，它既可以用于句末，也可用于句首，但比较而言，用于句首时，其强调意味较浓。如：
After missing a term through illness he had to work hard to catch up with the others.他因病一学期未上课，得努力赶上其他同学。
To avoid any delay please phone your order direct.为免延误，请直接打电话预订。
To keep themselves awake they sat on the floor and told each other stories.为了不至于睡着，他们坐在地板上轮流着讲故事。
To avoid back problems，always bend your knees when you lift heavy objects.为了不使背部受伤，你在扛重东西时，一定要将膝盖弯曲着。
专升本英语语法之用to do sth表目的
不定式的否定式为not to do sth，而不是to not do sth。如：
She had to struggle not to give in to a desire to laugh.她极力控制自己不要笑出来。
Then there was the mad rush not to be late for school.然后就是匆忙往学校赶，以免迟到。
I went to Francenot to study French，but to study architecture.我去法国不是为了学法语，而是为了学建筑。
He claimed he had bought the cigarettes for home consumption，not to sell them.他声称他买烟是为了自家享用，不是为了出售。