بگویم

In a sentence

• می‌خواهم به تو بگویم که امروز دیر خواهم رسید.

  I want to tell you that I will be late today.

  Here, 'بگویم' functions to express the speaker's intention to communicate someday in a polite and direct manner.

• آیا نیاز است چیزی به او بگویم؟

  Do I need to tell him/her something?

  In this sentence, 'بگویم' is used in a question form, seeking permission or necessity to say something.

• بگذار بگویم که چقدر خوشحالم.

  Let me tell you how happy I am.

  Here, 'بگویم' is used to introduce a statement that conveys the speaker's emotion or stance.