Usages of necesa
Mi ne pensas, ke ni devas ĉiam ŝanĝi niajn kutimojn, sed foje nova kutimo estas tre necesa.
I do not think that we must always change our habits, but sometimes a new habit is very necessary.
Varma jako estas necesa kiam la vetero fariĝas malvarma.
A warm jacket is necessary when the weather becomes cold.
Mi faras tion, kio estas necesa.
I do what is necessary.
Estas necese, ke la paciento revenu por dentokontrolo.
It is necessary for the patient to return for a dental check-up.
Estas necese, ke la dentisto kontrolu la ŝvelaĵon.
It is necessary for the dentist to check the swelling.
Estas necese, ke la paciento ellavu la buŝon per buŝakvo.
It is necessary for the patient to rinse out the mouth with mouthwash.
Estis necese, ke la dentisto eltiru la muelodonton.
It was necessary for the dentist to extract the molar.
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