The present continuous is formed with -- am/is/are + present participle.
The present participle is verb + ing eg happening
So present continuous tense of happen would be -- is happening, are happening.
It is hard to think of a use for am happening so maybe this one is not possible.
"IT is happen" does not mean anything; "it is happening" is a Present Tense - a Continuous Present Tense, to be more specific (not a "word").
I use the present continuous tense to indicate an action that is currently happening or ongoing at the moment of speaking. This tense is used to express actions that are in progress or temporary situations. It helps convey a sense of immediacy or real-time action.
The present continuous tense is used to talk about an action that is happening now as well as actions that will happen in the future.
The present continuous tense is used to show something that happen in the past and continued up until to the present now.
Yes, "is trying to be" is present tense. It is the present progressive form of the verb "try."
The present continuous tense of study is "am/is/are studying." For example, "I am studying," "He is studying," "They are studying."
The present continuous tense of 'lay' is 'is laying' or 'are laying'.
The present continuous tense of 'believe' is:I am believingYou/We/They are believingHe/She/It is believing
The present continuous tense of 'precede' is:I am preceding.You/We/They are preceding.He/She/It is preceding.
The present continuous tense of "look" is "is looking" or "are looking" depending on the subject. For example, "He is looking at the stars" or "They are looking for their lost dog."
The present continuous tense of "stop" is "stopping."
Actually, "have" is the present tense form for first and second person plural (I, you, we, they) while "has" is the present tense form for third person singular (he, she, it). For example: "I have, you have, we have, they have" versus "he has, she has, it has."