"It is common (for sb) to do sth" 是一个英语句型,用于描述某人或某群体经常做某事,或者某情况在某一范围内普遍发生。这个表达强调的是行为或现象的普遍性和常规性。这里的 "sb" 代表某人,"sth" 代表某个动作或情况。
**用法:**
1. **基本结构:**
- "It is common for sb to do sth",其中 "It" 是形式主语,真正的主语是 "to do sth" 这个不定式短语。
- "It" 之后通常跟 "is",表示“是”,"common" 表示“常见的”,"for sb" 表示行为的执行者,"to do sth" 描述常见的行为。
2. **例子:**
- "It is common for students to have part-time jobs during college."(大学生在大学期间兼职是很常见的。)
- "It is common for parents to worry about their children's future."(父母担心孩子的未来是常见的。)
3. **否定形式:**
- "It is not common for..." 可以用来表示某事不常见或罕见。
4. **疑问形式:**
- "Is it common for...?" 可以用来询问某事是否常见。
**同义句型与辨析:**
1. **As is often the case with sb/sth:**
- 例如:"As is often the case with new graduates, they struggle to find their first job."(对于新毕业生来说,找工作常常是个挑战。)
2. **Typically, sb does sth:**
- 例如:"Typically, people eat turkey on Thanksgiving Day in the US."(在美国,人们通常在感恩节吃火鸡。)
3. **Frequently, sb does sth:**
- 例如:"Frequently, employees attend training sessions to improve their skills."(员工经常参加培训课程来提升技能。)
这些句型与"It is common for sb to do sth"有相似的含义,都用来描述一种常见的行为或情况。然而,它们在语气和强调点上略有不同。"It is common" 更侧重于描述普遍性,而"As is often the case" 和 "Typically" 则可能含有轻微的主观评价或习惯性的意味,"Frequently" 则更强调行为的频率。
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