मरीज डॉक्टर की पर्ची दिखाता है; फार्मासिस्ट रसीद देता है।

Because की/का/के agrees with the thing being possessed, not with the possessor.

Here, पर्ची is a feminine singular noun, so the possessive form must be की:

• डॉक्टर की पर्ची = the doctor’s prescription/slip

Compare:

• डॉक्टर का कमरा = the doctor’s room (कमरा is masculine singular)
• डॉक्टर के मरीज़ = the doctor’s patients (मरीज़ is plural)

So की is used because पर्ची is feminine.

In this sentence, पर्ची means a slip of paper, and in context it usually means a prescription or doctor’s note/slip.

So:

• डॉक्टर की पर्ची = the doctor’s prescription

The word पर्ची can also be used in other situations for a small written slip, ticket, or note, depending on context.

These are the habitual present forms of the verbs:

• दिखाना = to show
• देना = to give

For a masculine singular subject, the habitual form is:

• verb stem + ता है

So:

• दिखाता है = shows / is in the habit of showing
• देता है = gives / is in the habit of giving

In simple translation, English usually just uses the present tense:

• मरीज डॉक्टर की पर्ची दिखाता है = The patient shows the doctor’s prescription.
• फार्मासिस्ट रसीद देता है = The pharmacist gives a receipt.

Yes. In the habitual present, the verb agrees with the subject in gender and number.

Here:

• मरीज is treated as masculine singular
• फार्मासिस्ट is treated as masculine singular

So the verbs are:

• दिखाता है
• देता है

If the subject were feminine, you would use -ती है:

• मरीज डॉक्टर की पर्ची दिखाती है।
• फार्मासिस्ट रसीद देती है।

So -ता here shows masculine singular agreement.

Because these are direct objects, and in Hindi direct objects do not always take को.

Here:

• पर्ची is the thing being shown
• रसीद is the thing being given

With inanimate, non-specific objects, Hindi often leaves out को.

So:

• पर्ची दिखाता है = shows the prescription
• रसीद देता है = gives a receipt

You may sometimes hear को with specific or person-like objects, but in this sentence leaving it out is completely normal.

Because this sentence is in the habitual present, not the perfective past.

In Hindi, ने is often used with transitive subjects in perfective constructions, for example:

• मरीज ने पर्ची दिखाई। = The patient showed the prescription.
• फार्मासिस्ट ने रसीद दी। = The pharmacist gave a receipt.

But in the present habitual, you normally do not use ने:

• मरीज पर्ची दिखाता है।
• फार्मासिस्ट रसीद देता है।

So the absence of ने is expected here.

है is the present-tense form of to be, and in this structure it helps form the habitual present.

So:

• दिखाता है
• देता है

are not just bare verbs; they are complete present-tense verb phrases.

Without है, the sentence would usually sound incomplete in standard Hindi prose.

Hindi usually prefers Subject–Object–Verb order.

So the sentence is structured like this:

• मरीज = subject
• डॉक्टर की पर्ची = object
• दिखाता है = verb

and

• फार्मासिस्ट = subject
• रसीद = object
• देता है = verb

That gives:

• मरीज डॉक्टर की पर्ची दिखाता है
• फार्मासिस्ट रसीद देता है

This is the most neutral and natural order. Hindi can be flexible, but this pattern is the standard one learners should get used to first.

Not necessarily. मरीज can refer to a patient of either sex. The noun itself often does not change form.

What changes is the verb agreement, depending on whether the person is understood as masculine or feminine:

• मरीज डॉक्टर की पर्ची दिखाता है। = The male patient shows the prescription.
• मरीज doctor की पर्ची दिखाती है। = The female patient shows the prescription.

So the noun may stay the same, but the verb tells you the gender if it matters.

They are loanwords used in Hindi:

• डॉक्टर = doctor
• फार्मासिस्ट = pharmacist

Modern Hindi uses many borrowed professional terms, especially in medical, technical, and official contexts.

A learner should be aware that Hindi often mixes:

• native/Sanskrit-derived words
• Persian/Arabic-derived words
• English loanwords

That is completely normal.

रसीद means receipt.

It usually refers to a written acknowledgment of payment or transaction.

So:

• फार्मासिस्ट रसीद देता है = The pharmacist gives a receipt.

This is a common everyday word in shops, pharmacies, offices, and billing situations.

Yes. The habitual present in Hindi often expresses a general action, typical behavior, or a simple present meaning.

So this sentence can mean something like:

• The patient shows the doctor’s prescription; the pharmacist gives a receipt.
• A patient shows the doctor’s prescription; the pharmacist gives a receipt.

It can describe either:

• a general process
• a typical situation
• a simple present event in context

Hindi often relies on context more than English does for that distinction.

The semicolon links two closely related clauses:

• मरीज डॉक्टर की पर्ची दिखाता है
• फार्मासिस्ट रसीद देता है

It shows that the two actions are part of the same situation or sequence.

You could also write them as two separate sentences, or sometimes use और if the style allows it, but the semicolon neatly connects them without making them one full sentence with a conjunction.