měige rén duì zhè jiàn shìqíng dōu yǒu zìjǐ de kànfǎ.

每 (měi) means “every/each” and is normally followed by a measure word:

• 每 + 个 + 人 → 每个人 (everyone / every person)
• 每 + 本 + 书 → 每本书 (every book)

每个 is “every + (generic measure word)”. In 每个人, 个 is the measure word for 人.

You can also say:

• 每人 instead of 每个人

Both are correct here and mean essentially the same thing. Differences:

• 每个人 feels a bit more colloquial and explicit.
• 每人 is slightly more concise and may sound a bit more formal or written in some contexts (e.g. 每人一杯 “one cup per person”).

In this sentence, 每个人… and 每人… are both natural.

对 (duì) here introduces the object/target someone’s attitude or opinion is directed toward, roughly “toward / regarding / about”.

• 对这件事情都有自己的看法
  • Literally: “toward this matter (they) all have their own views.”
  • Natural: “everyone has their own opinion about this matter.”

You could also say:

• 在这件事情上，每个人都有自己的看法。

Both are correct. Nuance:

• 对… is simple and very common in spoken Chinese.
• 在…上 (“on this matter”) feels a tiny bit more formal or written, but is also common.

Functionally, for this sentence, 对这件事情 ≈ 在这件事情上.

件 (jiàn) is the measure word for things like events, matters, incidents:

• 一件事 / 一件事情 → “one matter/one thing (that happened)”

In the sentence:

• 这件事情 = “this matter / this issue / this thing (that we’re talking about)”

Variations:

1. 这件事

   • Very common and completely natural.
   • Slightly shorter; often sounds a bit more colloquial.

2. 这个事情

   • Also used, especially colloquially.
   • Some speakers feel 这件事(情) is a bit neater or more standard.

All of these work here:

• 每个人对这件事情都有自己的看法。
• 每个人对这件事都有自己的看法。
• 每个人对这个事情都有自己的看法。

Meaning doesn’t really change.

都 (dōu) means “all / both” and emphasizes that the whole group shares the property that follows.

• 每个人…都有自己的看法。
  • Highlights: every person, without exception, has their own opinion.

If you remove 都:

• 每个人有自己的看法。

This is still grammatical and understandable, but:

• With 都, the “every single one of them” feeling is stronger.
• Without 都, it sounds a little bit less emphatic and a bit more like a general statement.

Difference from 也 (“also”):

• 也 compares one case to another: “also, too”.
• 都 groups them: “all (of them)”.

You cannot replace 都 with 也 here:

• ❌ 每个人对这件事情也有自己的看法。 (sounds wrong; “each person also has…” but also compared to what?)

So 都 is the natural choice.

Basic rule: 都 usually comes after the subject (or group) it refers to and before the verb.

Pattern:

• [Subject] + 都
  • [Verb Phrase]

In our sentence:

• Subject: 每个人对这件事情 (“every person, with respect to this matter”)
• Adverb: 都
• Verb: 有
• Object: 自己的看法

So:

• 每个人对这件事情 都 有 自己的看法。

You normally cannot move 都 after the verb in this kind of sentence:

• ❌ 每个人对这件事情有都自己的看法。
• ❌ 每个人对这件事情有自己的都看法。

Those are ungrammatical.

You can change fronting slightly, e.g.:

• 对这件事情，每个人都有自己的看法。

But 都 still immediately precedes 有.

有 (yǒu) means “to have / to possess” in this sentence:

• 有自己的看法 = “have one’s own opinion/view”

This expresses possession of an opinion, which is how Chinese often talks about opinions, ideas, feelings, etc.

Using 是 (shì) would not work:

• ❌ 每个人对这件事情是自己的看法。
  • This is ungrammatical; 是 links two noun phrases like “A is B”, but 自己的看法 is not being equated with the person; it’s something they have.

So:

• 有 = correct and natural (possess an opinion)
• 是 = wrong here

自己 (zìjǐ) means “self / oneself”. It is reflexive and refers back to the subject:

• 每个人…都有自己的看法。
  • Each person has their own opinion.

In 自己的看法:

• 自己 functions like a possessor (“one’s own”).
• 的 turns it into a modifier of 看法, similar to “’s” or “of” in English.

Structure:

• 自己 (self) + 的 (possessive marker) + 看法 (view/opinion)
• → “one’s own view”

Without 的, it would be ungrammatical here:

• ❌ 有自己看法 (missing the 的 in this structure; sounds wrong).

All three can relate to “opinion/view”, but with different nuances:

1. 看法 (kànfǎ)

   • Literally: “way of seeing”.
   • Very common, neutral.
   • Means “view, way of looking at something”.
   • Often used in everyday conversation:
     • 你对这件事有什么看法？
       “What’s your view on this matter?”

2. 意见 (yìjiàn)

   • “Opinion; suggestion; objection”.
   • Often used when expressing suggestions, criticisms, or objections:
     • 你有什么意见可以提。
       “You can raise any opinions/suggestions.”
   • Can sometimes have a slight “disagreeing/critical” feel, depending on context.

3. 观点 (guāndiǎn)

   • “Point of view; standpoint”.
   • Feels a bit more formal/abstract, often used in discussions, essays, academic contexts:
     • 他的观点很有意思。
       “His viewpoint is very interesting.”

In this sentence, 看法 fits perfectly; 意见 and 观点 would change the tone slightly:

• 每个人对这件事情都有自己的观点。 → more formal / ideological
• 每个人对这件事情都有自己的意见。 → sounds more like “everyone has their own opinions/remarks (possibly conflicting)”

Grammatically, the main subject is 每个人.

The 对这件事情 part is a prepositional phrase that modifies how the action relates to something:

• Subject: 每个人 (every person)
• Prepositional phrase: 对这件事情 (“with regard to this matter”)
• Adverb: 都
• Verb: 有
• Object: 自己的看法

So the core is:

• 每个人 都 有 自己的看法。
  “Everyone has their own opinion.”

Adding 对这件事情 just specifies the topic of those opinions.

Chinese generally does not mark plural on nouns the way English does.

• 人 can mean “person” or “people” depending on context.
• 每个 already implies “each/every one”, so adding a plural marker is unnecessary.

So:

• 一个人 → one person
• 很多人 → many people
• 每个人 → every person / everyone

You don’t say:

• ❌ 每个人人
• ❌ 很多人人

The quantity or distribution is always shown by words like 一, 两, 每, 很多, 几 etc., not by changing the noun itself.

Yes, this is also correct:

• 对这件事情，每个人都有自己的看法。

Meaning is essentially the same. Differences:

• Original: 每个人对这件事情都有自己的看法。
  • Starts with “everyone”, focusing on the people.
• Variation: 对这件事情，每个人都有自己的看法。
  • Starts with “regarding this matter”, focusing on the topic first.

Both word orders are natural; Chinese allows fairly flexible placement of prepositional phrases like 对…, 在…上, etc., as long as the main structure remains clear.

In practice:

• ❌ 对这件 (by itself) is incomplete; 件 is a measure word and must be followed by a noun.
• ✅ 对这件事 / 对这件事情
• ✅ 对这事 (colloquial; dropping the measure word in some set phrases is okay)
• ❌ 对这事情 is less standard; most people would say:
  • 对这件事情 (with 件), or
  • 对这事 / 对这个事情

So in this pattern, the safest natural options are:

• 对这件事情
• 对这件事
• 对这事 (more casual)
• 对这个事情 (colloquial, common but a bit looser)

Yes, you can say:

• 大家对这件事情都有自己的看法。

Differences:

• 每个人 = “each person / everyone individually”, emphasizing individuality.
• 大家 = “everyone / all of you”, but as a group; very common when addressing an audience.

So:

• 每个人对这件事情都有自己的看法。

  • Slightly more neutral; stresses that each individual has their own view.

• 大家对这件事情都有自己的看法。

  • Feels more like the speaker is talking to the group (“all of you have your own views”).
  • Slightly more conversational.

Grammatically, both are fine; the nuance is in emphasis and addressee.