Occur
occur vi. 发生；出现；存在。常见构造有：
sth. occurs to sb. = sth. strikes sb. = sth. comes to sb. 某人想起某事
It occurs to sb. to do sth.
某人想起做某事
It occurs to sb. that-clause = It strikes sb. that-clause 某人想起某事
[例句] The disease occurs most frequently in rural areas. 这种病常见于农村地区。
A good idea occurred to him when he was asked to solve the problem.
当被叫到解决这个问题的时候，他突然想到一个好主意。
I suppose it never occurred to you to phone the police. 我想你压根儿就没想到给警察打吧。
It occurred to her that she should adopt the homeless child. 她突然想到她应该收养这个无家可归的孩子。
occur to
[辨析] occur; happen; take place
※happen与occur都可以表示“偶然发生〞，但occur还可以表示“按方案发生〞。如：
The accident happened / occurred yesterday.
事故是昨天发生的。
His birthday occurs on 15th October.
他的生日是10月15日。
※take place 通常表示方案、安排之内的“发生〞，偶尔也表示方案、安排之外的发生。如：
The dance will take place on Saturday night. 舞会将于星期六晚上举行。
The accident took place only a block from his home.
事故就发生在离他家一个街区的地方。
※此外，happen to do sth. 指“碰巧干某事〞。sth. happens to sb. 指“某人发生了某事〞。如：
He happened to be chasing Jack when the teacher came in.
当教师进来的时候他碰巧在追赶Jack.
A bad accident happened to his family last week. 上周他家发生了很不幸的事。[小试] 用以上单词或短语的适当形式填空。
1. Coughing from smoking ______ mainly in old people.
2. When the professor asked him questions, he ______ to have fallen asleep.
3. It suddenly ______ to me that the rich man was probably murdered by his own daughter.
4. The opening of the play will ______ tomorrow.
5. Haven’t seen you for ages. What has ______ to you?
1. occurs
2. happened
3. occurred
4. take place
5. happened

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