catch a cold ,have a cold
这两个动词短语均可作“感冒”解,但具体运用时是有区别的.
l)catch a cold强调“感冒”的行为,have a cold表示“感冒”持续的状态.
Yesterday he caught a cold.昨天他患了感冒.
He has a bad cold now.他现在感冒了.
2)catch a cold不可与表示一段时间的状语连用,而have a cold of可以.
3)catch a cold中的a可以省略,但cold前有形容词修饰时则不能省略；have a cold中的a不能省,在口语中它等于have got a cold.
Put on more clothes or you'll catch (a) cold.多穿点衣服,要不然会感冒的.
She has had a cold for two weeks.她感冒两周了.
附：
Catch a cold主要是有讲有感冒的迹象,是呈现一种不舒服的状态.
如：He catch a cold yesterday.
而catch cold 讲感冒这件事,并不是某人现在或在某个时刻有感冒的症状.
如：She has a natural disposition to catch cold.