occur的用法和短语例句
学习英语的时候，我们将会遇到很多单词，有简单的，也有难的，那么大家知道occur这个单词吗?它的意思和用法是什么呢?下面是小编给大家带来的occur的用法和短语_occur的用法及例句，以供大家参考，我们一起来看看吧!
★★occur的解释★★
★occur的用法★
v.发生;出现;存在;产生
第三人称单数： occurs
现在分词： occurring
过去式： occurred
过去分词： occurred
occur的用法1：occur的基本意思是“呈现在视野、思想、意识中”。occur常与介词to连用,意为“发生”“想起”等。
occur的用法2：occur一般只用作不及物动词,含有“出乎意料”的意味,不可用于表达意料之中或计划之中的事情,也不与suddenly连用。
occur的用法3：occur有时还可用作系动词,接形容词作表语,多表示“存在”。
occur的用法4：occur没有被动语态,即使含有被动意义,也须用主动语态来表达。
occur to (v.+prep.)
…发生在 happen to sb (especially of unpleasant events)
occur to sb
I hope no accident has occurred to him.我希望他没出什么事。
被想起〔到〕 come to mind of (sb/sth)
occur to sb/sth
Such a simple explanation never occurred to me!我从未想到如此简单的解释。
It ～s/ed+to sb+to-v/that-clause
1. If these drugs are stopped abruptly then some withdrawal symptoms mayoccur.
如果突然停服这些药，则可能出现一些戒断症状。
2. Keep a pad handy to jot down queries as they occur.
手边放一本便笺簿，以便有问题时随时记下。
3. Nitrates are chemicals that occur naturally in water and the soil.
硝酸盐是水和土壤中自然存在的化学物质。
4. Emergency cooling systems could fail and a reactor meltdown could occur.
紧急冷却系统有可能失灵，核反应堆有可能发生堆芯熔毁。
5. Unless you respect other people's religions, horrible mistakes and conflict willoccur.
如果不尊重别人的宗教信仰，就会祷下大错，酿成冲突。
6. When vacancies occur, the office puts out feelers to the universities.
有空缺职位的时候，办事处就到各个大学去打探。
7. Changes in temperature occur slowly and are constrained within relatively tight bounds.
温度变化缓慢，而且局限在相对较小的范围内。
8. These snails do not occur on low-lying coral islands or atolls.
在地势低平的珊瑚岛或环礁上没有这种螺。
9. About two in every five epileptic fits occur during sleep.
每5例癫痫病中约有两例是在睡眠过程中发作的。
10. It did not occur to me to check my insurance policy.
我没有想到要核实我的保险单条款。
11. There will come a time when the crisis will occur.
危机总有一天会爆发。
12. Curiously, the word "gay" does not occur in the index.
奇怪的是，gay这个词没有出现在索引当中。
13. Chemical transformations occur.
发生了化学转换。
14. No one has suggested how this might occur.
没人说得清这事是怎么发生的。
15. They expect bonding to occur naturally.
他们希望能够建立自然的关系。
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