use to,be used to do,used to do,be used to doing和be used for有什么区别?
老师,有时不知道use在这类词组中是什么词性的,这类都是固定使用方法吗?
1.used to do“过去常......”,目前已不。比如:
He used to go about in a black cape.他以前常穿一件黑披风。
2.be used to do是被动语态,被用来做......。比如:
The compare algorithm is used to do the comparison.比较算法是用来比较属性值的。
3. be used to doing表“习惯于......”。比如:
He is used to living in such a hot climate.他习惯于生活在如此炎热的气候里。
4.be used for“用于......”,后接名词。比如:
The plane is used for electronic jamming and radar detection.这架飞机用于进行电子干扰和雷达探测。