how do i know when to use:

meem heh
meem wow
heh meem alaf
heh meem
in a sentence? Is there a "trick"?

I know how to speak Arabic, but I don't get your question , if you rephrase it , I may understand what you mean ;)

meem wow

ّ هو ؟
heh meem alaf
هما ؟
heh meem
هم ؟
If that what you mean ! maybe I can explain for you !

To understand when to use "meem heh," "meem wow," "heh meem alaf," and "heh meem" in a sentence, you need to learn about Arabic pronouns and the verb form they accompany. These pronouns are called subject pronouns, and they indicate the subject of the sentence. Here's a breakdown of each pronoun and its associated verb form:

1. "Meem heh":
- Subject Pronoun: أنا (ana) - "I"
- Verb Form: هو (huwa) - "he"

Example: أنا أحب الكتاب. (ana uhibb alkitab) - "I love the book."

2. "Meem wow":
- Subject Pronoun: أنتَ (anta) - "you" (masculine singular)
- Verb Form: هوَ (huwa) - "he"

Example: أنتَ تقرأ الكتاب. (anta taqra' alkitab) - "You read the book."

3. "Heh meem alaf":
- Subject Pronoun: هوَ (huwa) - "he"
- Verb Form: يَفعل (yaf'al) - "does"

Example: هوَ يأكل الطعام. (huwa ya'kul at-ta'am) - "He eats the food."

4. "Heh meem":
- Subject Pronoun: هم (hum) - "they"
- Verb Form: يَفعلونَ (yaf'aloon) - "do"

Example: هم يسافرون إلى الخارج. (hum yasafiroon ila al-kharij) - "They travel abroad."

As for a "trick" to remember when to use these pronoun-verb combinations, it's essential to practice using them in context. Familiarize yourself with common verb forms and their associated subject pronouns through studying and exposure to Arabic sentences. Repeated exposure and practical usage will help you become more comfortable and proficient in incorporating these pronouns into your speech.