In the English language, the usage of “for,” “since,” and “during” plays a significant role in expressing time and duration. These three words are commonly employed to indicate specific time frames or periods. For instance, “for” is employed to denote a duration of time, such as “I have been studying English for five years.” On the other hand, “since” is used to point out the starting point of an action or event, as in “I have been living in this city since 2010.” Additionally, “during” is utilized to highlight a particular time period within a longer duration, for example, “I watched a movie during the weekend.” The correct usage of these words allows speakers and writers to convey precise information about time and duration in the English language.
1、英语中使用for、since、during
在英语中，for、since和during是常用的表示时间的介词。它们在句子中的使用方式和含义略有不同，我们来详细了解一下。
1. for
“for”表示一段时间的长度，通常与表示时间的名词连用。例如：
– I have been studying English for five years.
（我已经学习英语五年了。）
– They have been living in London for two months.
（他们已经在伦敦住了两个月了。）
在这些例句中，“for”后面的名词表示时间的长度，可以是具体的数字，也可以是不可数名词，如“years”和“months”。
2. since
“since”表示一个时间点开始的时间，通常与表示时间的名词短语或从句连用。例如：
– I have been working here since 2010.
（我从2010年开始在这里工作。）
– They have been friends since they were in high school.
（他们从高中时期就是朋友了。）
在这些例句中，“since”后面的名词短语或从句表示一个具体的时间点，如“2010”和“they were in high school”。
3. during
“during”表示在某个时间段内发生的事情，通常与表示时间段的名词连用。例如：
– I visited my grandparents during the summer vacation.
（我在暑假期间去看望了我的祖父母。）
– We had a lot of fun during the party.
（在派对期间我们玩得很开心。）
在这些例句中，“during”后面的名词表示一个具体的时间段，如“the summer vacation”和“the party”。
需要注意的是，在使用这些介词时，有时候需要根据句子的时态和语境来选择合适的介词。例如：
– I have been studying English for five years.
（我已经学习英语五年了。）
– I studied English for five years.
（我学习英语五年了。）
在这两个句子中，由于时态的不同，使用的介词也有所不同。在第一个句子中，使用的是现在完成进行时，所以使用“have been studying”和“for”。而在第二个句子中，使用的是一般过去时，所以使用的是“studied”和“for”。
在实际使用中，我们需要根据具体的语境和时态来选择合适的介词。以下是一些更多的例子：
– I have been living in this city for ten years.
（我在这个城市住了十年了。）
– They have been playing tennis since this morning.
（他们从今天早上开始打网球。）
– She stayed at home during the storm.
（在暴风雨期间，她呆在家里。）
– We will be on vacation during the holidays.
（在假期期间，我们将度假。）
for、since和during是表示时间的常用介词，在句子中有着不同的用法和含义。使用时需要根据具体的语境和时态来选择合适的介词，以确保句子的准确表达。通过不断的练习和积累，我们可以更加熟练地运用这些介词，提高我们的英语表达能力。
2、英语中使用for,since,during
For, Since, and During: How to Use Them Correctly in English
Introduction:
In English, prepositions play a crucial role in connecting words and phrases within a sentence. Three commonly used prepositions, “for,” “since,” and “during,” have distinct meanings and usage patterns. Understanding when and how to use these prepositions correctly is essential for effective communication. In this article, we will explore the meanings and usage of these prepositions, providing examples to illustrate their proper usage.
1. For:
The preposition “for” is used to indicate duration or a specific period of time. It is often used to express the length of time an action or situation lasts. Consider the following examples:
a) I have been studying English for five years.
b) She will be on vacation for two weeks.
c) They have lived in that house for a decade.
In these examples, “for” is used to denote the length of time the action or situation has lasted.
2. Since:
The preposition “since” is used to indicate the starting point of an action or situation that continues in the present. It is commonly used with specific points in time, such as dates or events. Consider the following examples:
a) I have been working here since 2010.
b) She has been playing the piano since she was five.
c) They have been friends since high school.
In these examples, “since” is used to denote the starting point of the action or situation that continues in the present.
3. During:
The preposition “during” is used to indicate a period of time in which an action or situation occurs. It is often used to describe an event or activity within a specific time frame. Consider the following examples:
a) I saw him during the meeting.
b) She read a book during her flight.
c) They went for a walk during the evening.
In these examples, “during” is used to describe an event or activity that takes place within a specific time frame.
4. Usage Tips:
a) “For” and “since” are often used with present perfect tense, while “during” can be used with various tenses.
b) “For” is used to express a duration of time, while “since” indicates the starting point of an action or situation.
c) “During” is used to describe an event or activity within a specific time frame.
5. Common Mistakes:
a) Incorrect: I have been studying English since five years.
Correct: I have been studying English for five years.
b) Incorrect: He has been playing football for he was a child.
Correct: He has been playing football since he was a child.
c) Incorrect: I saw her for the party.
Correct: I saw her during the party.
Conclusion:
Understanding the correct usage of prepositions is vital for clear and effective communication in English. “For,” “since,” and “during” are prepositions that have distinct meanings and usage patterns. By using these prepositions correctly, you can convey your ideas accurately and avoid common mistakes. Practice using these prepositions in different contexts to enhance your English language skills.
