להיות: The Infinitive of 'To Be' | Hebrew Grammar

להיות, lihyót, is the infinitive “to be.” It does not fill the missing present-tense is/are: Hebrew simply says הוא רופא “he is a doctor” and היא עייפה “she is tired.” להיות appears only when the sentence contains an infinitive slot—after “want,” “need,” or “possible,” in a purpose phrase, or when the whole “being…” clause functions like a noun.

אני רוצה להיות רופאה, אבל עוד לא החלטתי באיזה תחום.

aní rotsá lihyót rof'á, avál od lo hekhláti be'éize tkhum

I want to be a doctor, but I haven't decided in which field yet. (f. speaker)

כדי להיות בטוחה, בדקתי את הכתובת שוב.

kdei lihyót betukhá, badákti et haktóvet shuv

To be sure, I checked the address again. (f. speaker)

The three-form contrast

Keep the same predicate and change only the grammatical environment. In the present, Hebrew has no verb. Past and future use finite forms of היה. After רוצה, the infinitive is required.

הוא רגוע היום.

hu ragúa hayóm

He is calm today. (present: no copula)

אתמול הוא היה רגוע.

etmól hu hayá ragúa

Yesterday he was calm. (past: היה)

הוא רוצה להיות רגוע לפני הראיון.

hu rotsé lihyót ragúa lifnéi hare'ayón

He wants to be calm before the interview. (infinitive: להיות)

מחר הוא יהיה רגוע יותר, אחרי שתגיע התשובה.

makhár hu yihyé ragúa yotér, akharéi shetagía hateshuvá

Tomorrow he'll be calmer, after the answer arrives. (future: יהיה)

This is not an arbitrary omission of a word that is “understood.” In a basic present nominal sentence, identity, description, and location are predicated directly. The language only activates the היה paradigm when tense or an infinitive environment makes a verbal form necessary. See no present-tense copula and the full היה paradigm.

After a verb that governs an infinitive

רוצה “want,” מנסה “try,” מעדיף “prefer,” מקווה “hope,” and many other verbs can be followed by an infinitive. When the desired or attempted state is “being X,” that infinitive is להיות. It can link the subject to a profession or identity, an adjective, or a location.

היא מעדיפה להיות בבית הערב ולא לצאת בגשם.

hi ma'adifá lihyót babáyit ha'érev veló latsét bagéshem

She'd rather be at home tonight than go out in the rain.

אני מקווה להיות פנוי עד ארבע, אבל לא מבטיח.

aní mekavé lihyót panúi ad árba, avál lo mavtíakh

I hope to be free by four, but I can't promise. (m. speaker)

The ordinary same-subject rule still applies. אני מקווה להיות פנוי means that I hope and I will be free. For another subject, use a finite ש-clause: אני מקווה שהוא יהיה פנוי, “I hope he will be free.”

After modals and impersonal predicates

Words such as צריך “need/must,” אפשר “possible/can,” כדאי “advisable,” and אסור “forbidden” create an infinitive slot. If their complement is a state rather than an action, להיות supplies the verb.

צריך להיות זהיר עם הקישור הזה, הוא נראה חשוד.

tsaríkh lihyót zahír im hakishúr hazé, hu nir'é khashúd

You need to be careful with this link — it looks suspicious. (generic masculine singular)

אי אפשר להיות בטוח בלי לבדוק את המספר פעמיים.

i efshár lihyót batúakh bli livdók et hamispár pa'amáyim

You can't be sure without checking the number twice. (generic masculine singular)

כדאי להיות שם רבע שעה לפני שמתחיל הסיור.

kedái lihyót sham réva sha'á lifnéi shematkhíl hasiyúr

It's a good idea to be there fifteen minutes before the tour starts.

English sometimes hides the infinitive after a modal: you must be, you can be. Hebrew does not have a bare verb form equivalent to English be. The modal is followed by the full ל־ infinitive להיות, just as רוצה is followed by לעבוד or לנסוע.

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Use a slot test, not an English-word test. If the Hebrew frame demands an infinitive and the meaning is identity, state, or location, insert להיות. If you are making a plain present statement, do not. This predicts הוא עייף but הוא רוצה להיות רגוע.

Purpose and noun-like uses

Purpose markers such as כדי require an infinitive when both actions share a subject, so “in order to be” is כדי להיות. The infinitive can also head a whole noun-like clause, just as other infinitives do.

שמתי תזכורת כדי להיות מוכן לפגישה בזמן.

sámti tizkóret kdei lihyót mukhán lapgishá bazmán

I set a reminder so I'd be ready for the meeting on time. (m. speaker)

להיות לבד בבית בלילה זה לא נעים.

lihyót levád babáyit baláyla ze lo na'ím

Being home alone at night isn't pleasant.

The second example matters because it refines the beginner’s shortcut “להיות appears after another word.” More exactly, להיות appears where the syntax calls for an infinitive. A governing word is the most common trigger, but a noun-like infinitive clause can itself occupy the subject position.

Wanting a person vs wanting to be a person

אני רוצה להיות רופא and אני רוצה רופא are both grammatical, but להיות changes the structure and therefore the meaning. In the first, רופא is a predicate identity: the speaker wants to become or serve as a doctor. In the second, רופא is the direct object: the speaker wants a doctor, perhaps at a clinic.

✅ אני רוצה להיות רופא ולעבוד במיון.

aní rotsé lihyót rofé vela'avód bamiyún

I want to be a doctor and work in the emergency department. (m. speaker)

✅ אני רוצה רופא, הכאב נהיה יותר חזק.

aní rotsé rofé, hake'év nihyá yotér khazák

I want a doctor — the pain is getting worse. (m. speaker)

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להיות does not mean “become” by itself. אני רוצה להיות רופא can be translated “I want to become a doctor” because the desired future identity is understood, but literal “become” is often נהיה or הפך ל־. The infinitive להיות simply links a subject to a state or identity.

Common Mistakes

1. Inserting להיות into a plain present sentence. Hebrew has no present form of היה in this construction.

❌ הוא להיות רופא בבית החולים

Incorrect — a plain present identity sentence has no copula: הוא רופא בבית החולים.

✅ הוא רופא בבית החולים ועובד בעיקר בלילות.

hu rofé bevét hakholím ve'ovéd be'ikár balelót

He is a doctor at the hospital and works mostly nights.

2. Omitting להיות after an impersonal modal. צריך can stand alone only when its complement is recoverable; before an adjective, the state needs להיות.

❌ צריך זהיר עם הסכין הזאת

Incorrect — זהיר is an adjective, so the modal needs the infinitive להיות: צריך להיות זהיר.

✅ צריך להיות זהיר עם הסכין הזאת, היא חדה מאוד.

tsaríkh lihyót zahír im hasakín hazót, hi khadá me'ód

You need to be careful with this knife — it's very sharp. (generic masculine singular)

3. Dropping להיות after כדי. כדי cannot connect directly to an adjective.

❌ כדי בטוח בדקתי שוב

Incorrect — 'to be sure' is כדי להיות בטוח.

✅ כדי להיות בטוח, השוויתי את השם גם לדרכון.

kdei lihyót batúakh, hishvéti et hashém gam ladarkón

To be sure, I compared the name with the passport too. (m. speaker)

4. Assuming רוצה + noun means “want to be.” Both versions are good Hebrew, but one has a predicate and the other a direct object.

✅ היא רוצה להיות מנהלת המחלקה.

hi rotsá lihyót menahélet hamakhlaká

She wants to be the department manager.

✅ היא רוצה את מנהלת המחלקה.

hi rotsá et menahélet hamakhlaká

She wants the department manager. (she wants to speak to or summon that particular person)

Key Takeaways

Plain present identity, description, and location have no להיות: הוא רופא, היא עייפה, הם בבית.
Past and future use finite היה forms; an infinitive environment uses להיות.
Wanting, necessity, possibility, purpose, and noun-like infinitive clauses can all create that environment.
להיות links a subject to an identity, state, or location; leaving it out can turn the following noun into an object and change the meaning.

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