医学SCI论文写作
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2025.02.10 ~ 2025.06.29
  • 首都医科大学
  • 建议每周学习2-3小时
  • 240人已参与
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第7次开课

开始:2025-02-10

截止:2025-06-29

课程已进行至

20/20周

成绩预发布时间 2025-06-26

期末考试截止时间 未设置

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首都医科大学
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首都医科大学
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首都医科大学
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首都医科大学
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首都医科大学
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首都医科大学
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考试(15)

question

By 一一 24天前 11次浏览 课时6

Based on my writing experience, correctly using the comma is frequently challenging. There are countless rules and ways to apply it. For example, determining when to use a comma to separate items in a list, offset introductory phrases, or divide independent clauses connected by a coordinating conjunction can pose difficulties. A typical error is putting a comma in the wrong place or using one where it isn't required, as in the sentence, "I went to the store and, bought some groceries." The comma after "and" is redundant. In certain literary works, a prevalent punctuation mistake involves the improper use of semicolons. Take, for example, the sentence "He wanted to go to the park; but it was raining." This is incorrect. In this case, a comma should be used instead of a semicolon because "but" is a coordinating conjunction linking two independent clauses, and when a coordinating conjunction is present, a semicolon is not necessary. The cause of this error could be that the writer was unclear about the correct usage of semicolons and believed it was needed to separate the two related thoughts, failing to recognize that the conjunction "but" already fulfills that function.

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