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Verb "ter"/ Verbo ter

The verb to have is another important verb in Portuguese. It's an irregular verb:

Person	Portuguese	English
1. s.	eu tenho	I have
2. s.	tu tens	you have
3. s.	ele/ela tem	he/she/it has
1. p.	nós temos	we have
2. p.	vós tendes	you all have
3. p.	eles/elas têm	they have

See some examples:
The verb "ter" means "to have" in the sense of "possess", but, whenever followed by que or de, also can design some obligation, meaning "to have to" or "to must". Frequently "ter que" means "to need to" as well.

See some examples:
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Past imperfect indicative of regular verbs/Pretérito imperfeito do indicativo de verbos regulares

Tense	Person	1st conjugation	2nd conjugation	3rd conjugation
Past imperfect indicative	eu	–ava	–ia	–ia
	tu	–avas	–ias	–ias
	ele/ela	–ava	–ia	–ia
	nós	–ávamos	–íamos	–íamos
	vós	–áveis	–íeis	–íeis
	eles/elas	–avam	–iam	–iam
Infinitive	–ar	–er	–ir

Conjugation rules:

• the second conjugation (er-verbs) is equals to the third conjugacion (ir-verbs), only changing the stem vowel e of er-verbs by i.
• the first person singular (eu) is equals to the third person singular (ele/ela).
• the second person singular (tu) is equals to the third person singular (ele/ela) plus -s.
• the third person singular (ele/ela) takes the stem vowel plus -va in first conjugation (ar-verbs) and -a in third conjugation (er and ir-verbs), noting that er-verbs have the stem vowel replaced by -i.
• the first person plural (nós) takes the stem vowel plus -vamos (ar-verbs) or -amos (er and ir-verbs). Don't forget the acute accent upon the stem vowels and to replace stem vowel in er-verbs by -i.
• the second person plural (vós) takes the stem vowel plus -veis (ar-verbs) or -eis (er and ir-verbs). Don't forget the acute accent upon the stem vowels and to replace the stem vowel in er-verbs by -i.
• the third person plural (eles/elas) is equals to the third person singular (ele/ela) plus -m.

There is a table with three examples below: "cantar" ("to sing"), "comer" ("to eat") and "partir" ("to leave").

Tense	Person	1st conjugation	2nd conjugation	3rd conjugation
Past imperfect indicative	eu	cantava	comia	partia
	tu	cantavas	comias	partias
	ele/ela	cantava	comia	partia
	nós	cantávamos	comíamos	partíamos
	vós	cantáveis	comíeis	partíeis
	ele/ela	cantavam	comiam	partiam
Infinitive	cantar	comer	partir

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Irregular verbs/Verbos irregulares

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Oblique and straight pronouns/Pronomes do caso reto e oblíquo

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Cardinal numbers/Números cardinais

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Dialogue/Diálogo