Summarize this article:

In Swahili, words are accented on the second-to-last syllable. People won't know what you're saying if you don't get the pronunciation right.  The correct pronunciation is "Nah-koo-PEND-ah." The correct pronunciation of the less colloquial version of "I love you" is "Nee-nah-koo-PEND-ah." There are just five vowels in the Swahili language: a, e, i, o, and u. The vowels are pronounced the same way they are pronounced in Japanese, Italian, and Spanish. This is important to understand if you are using another term of endearment.  For example, "Ninakupenda pia" is pronounced "Nee-nah-koo-PEND-ah pee-ah." A is pronounced "ah" (like "father") E is pronounced "eh" (like "egg") I is pronounced "ee" (like "tree") O is pronounced "oh" (like "oval") U is pronounced "oo" (like "room") There are no silent vowels in Swahili. You must pronounce each vowel in a sentence. There are many consonants in Swahili that are pronounced the same way as they are pronounced in the English language.  The letters "n" and "m" are pronounced the same way they are pronounced in English. The difference is that, in Swahili, sometimes another consonant will follow the "n," and it also must be pronounced. For example, "Ndugu" is a word that means relative. Consonants pronounced the same way they are pronounced in English include the letters p, s, t, v, w, y, and z. Understand how to pronounce consonant pairings. For example, "ch" is pronounced like the "ch" in "chair." And "sh" is pronounced like the "sh" in "shut." "Gh" can be pronounced with a hard "g" as in the English word "garden."

Summary:
Pronounce "I love you" right. Learn how to pronounce Swahili vowels. Learn how to pronounce consonants in Swahili.