zhè shì fùyìnjiàn.

On its own, 这 is usually pronounced zhè and means this.

But when 这 comes before a classifier/measure word, it often changes in natural speech to zhèi, for example:

• 这个 → zhèige / zhège in careful speech, often sounding like zhèi ge
• 这本书 → often zhèi běn shū

In 这是复印件, 这 is not directly followed by a measure word, so zhè is the normal pronunciation.

是 is the verb to be in an identifying sentence.

So 这是复印件 has the structure:

• 这 = this
• 是 = is
• 复印件 = photocopy / copy

So the pattern is:

A 是 B = A is B

This is one of the most basic sentence patterns in Mandarin.

Usually, no, not if you mean This is a photocopy.

To identify one thing as another noun, Mandarin normally uses 是:

• 这是复印件。
• 那是原件。

Without 是, 这复印件 sounds incomplete or like part of a larger phrase, such as this photocopy rather than a full sentence.

So:

• 这是复印件。 = full sentence
• 这份复印件。 = this photocopy (noun phrase, not a full sentence by itself)

Mandarin does not use articles like a, an, and the the way English does.

So 复印件 can mean:

• a photocopy
• the photocopy
• photocopies in some contexts

The exact meaning depends on context.

In 这是复印件, English naturally says This is a photocopy, but Mandarin just says 这是复印件 without any article.

复印件 means photocopy, copy, or duplicate copy, usually of a document.

It can be broken down like this:

• 复印 = to photocopy / duplicate
• 件 = item; a suffix often used for documents or pieces of correspondence

So 复印件 is literally something like a photocopied item/document.

It is commonly used in practical situations like offices, banks, schools, or visa applications.

Not in this sentence.

In 这是复印件, 复印件 is being used as a general noun after 是, so no measure word is needed.

But if you want to say this photocopy as a noun phrase, you usually would use a measure word, often 份:

• 这是一份复印件。 = This is a photocopy.
• 请给我一份复印件。 = Please give me one copy.

So both are possible:

• 这是复印件。 → natural, simple identification
• 这是一份复印件。 → also correct, slightly more explicit

Yes, 这 is the subject here.

Mandarin does not need a dummy subject like English it. The sentence directly uses this:

• 这 = this
• 是 = is
• 复印件 = photocopy

So literally it is:

• This is photocopy/copy

And natural English becomes:

• This is a photocopy.

The pinyin is fùyìnjiàn.

Tone by tone:

• 复 = fù (4th tone)
• 印 = yìn (4th tone)
• 件 = jiàn (4th tone)

So it is three 4th tones in a row: fù-yìn-jiàn.

A few pronunciation tips:

• fù: like foo but with a falling tone
• yìn: starts with a y sound
• jiàn: the j in pinyin is not the English j; it is softer, with the tongue closer to the front of the mouth

Because there are several 4th tones together, in natural speech the first ones may sound slightly less forceful than when said in isolation, but the dictionary tones are still all 4th tone.

It is grammatical in some contexts, but it is usually not the most natural choice.

For objects like documents, Mandarin often prefers a specific measure word rather than 个. A better sentence would be:

• 这是一份复印件。

Using 个 is common for many general nouns, but for documents 份 is more natural.

So the best options are:

• 这是复印件。
• 这是一份复印件。

这 means this, and 这个 can also mean this one / this.

In a sentence like this, both can work:

• 这是复印件。
• 这个是复印件。

But there is a slight difference:

• 这 is simpler and more direct: This is a photocopy.
• 这个 often points more specifically to this one / this thing

So if you are physically indicating an item, 这个是复印件 can sound very natural. But 这是复印件 is a standard, clean textbook sentence.

Yes.

You can say:

• 这是复印件吗？

That means:

• Is this a photocopy?

The sentence structure stays the same, and 吗 turns it into a yes/no question.

You can also answer:

• 是。 = Yes.
• 不是。 = No / It is not.

Yes, there can be.

• 复印件 usually means a photocopy specifically
• 副本 means a copy/duplicate version, and can be broader

For example:

• 身份证复印件 = photocopy of an ID card
• 合同副本 = duplicate copy of a contract

In everyday document situations, 复印件 is the very natural word when the item is literally a photocopy.

Sometimes in conversation, Mandarin can omit words that are clear from context, but as a complete sentence, 是复印件 by itself usually sounds incomplete unless it is answering a question.

For example:

• 这是什么？ = What is this?
• 是复印件。 = It’s a photocopy.

In that kind of answer, dropping 这 is fine because the topic is already understood.

But as a standalone sentence, 这是复印件 is the normal full form.