since用什么提问

Since用于现在完成时，通常后面接某事开始的时间。对于since的提问，常用的疑问词是“when”。例如，“Have you finished your work since yesterday?” 或者 “When did you start doing your work since?” 来询问自从某个时间点开始发生的事情。因此，对于“since”提问通常用疑问词“when”。

以上信息仅供参考，建议查阅权威教材或咨询专业英语教师以获取准确信息。

When提问时，该如何正确使用since?

当用since提问时，应该根据句子的语境和时态来正确使用。如果句子描述的是从过去某个时间点开始一直持续到现在的情况，那么应该使用现在完成时，并与since引导的时间状语从句一起使用。例如，“Since when have you been living in this city?”，这个句子询问的是从什么时候开始你一直住在这个城市。

如果句子描述的是一个具体的过去动作或事件，那么应该使用一般过去时态，例如，“When did you arrive in this city?”，这个句子询问的是你到达这个城市的具体时间。

此外，对于since引导的时间状语从句，谓语动词通常为持续性动词，表示从过去某个时间点开始一直持续到现在的情况。如果是短暂性动词，则通常使用一般过去时态，如“I have lived in this city for 10 years.”（我住了这个城市10年，但现在不住在这里了）或“I worked here for more than twenty years.”（我在这里工作了二十多年，但现在不在这里工作了）。

因此，在使用since提问时，要根据句子的语境和时态来选择合适的时态和谓语动词形式，以准确表达句子的意思。

How do I formulate a question using "since" correctly when asking about a time period?

To correctly formulate a question using "since" when asking about a time period, you can follow these steps:

1. Identify the starting point of the time period you want to inquire about.
2. Use the word "since" to specify the beginning of the period.
3. Specify the action or event that occurred during the time period.

For example:

• "Since when have you been living in this city?"
• "Since what year has your company been operating?"
• "How long have you been doing this job since you started?"

Remember to keep the sentence structure clear and grammatically correct. 1

What are some examples of questions that use "since" in a different context?

Here are some examples of questions that use "since" in a different context:

1. How long have you been working at your current job since?
2. What have been some significant changes in your life since your last visit?
3. What new skills have you developed since your last educational course?
4. What have been some popular trends in fashion since the last decade?
5. How many years has it been since we last met?

In these examples, "since" is used to introduce a period of time that has passed or elapsed between two events or points in time.[citation:N/A]

What other words or phrases can I use instead of "since" in a sentence?

You can use the following words or phrases instead of "since" in a sentence:

1. "because"
2. "as"
3. "for"
4. "in that"
5. "considering that"

[citation: 0] (based on general knowledge of English language and usage)

What is the correct form of the question "Have you finished your work since yesterday?

The correct form of the question "Have you finished your work since yesterday?" is "Have you finished your work since yesterday?" This is a proper question to ask someone about their progress on a task that began before yesterday. [citation:N/A]

" in formal English?

" in formal English is "in".1

Can I use "when" to ask questions about the duration of an action that started in the past and continues till now, like in the case of "since"?

Yes, you can use "when" to ask questions about the duration of an action that started in the past and continues till now. However, "when" is more commonly used to ask about a specific point in time or a period of time that something happened or will happen, while "since" is more suitable for referring to the duration of an action that started in the past and continues to the present. 1

For example, you can ask "When did the construction of this building start?" to inquire about the beginning of a construction project that started in the past and is still ongoing. However, if you want to know how long the construction has been going on, it's more appropriate to say "How long has the construction of this building been going on since it started?" 2

So, while "when" can be used in some cases to ask about duration, it is not the preferred option when referring to a duration that started in the past and continues till now. 3