之前一直對We Bare Bears S01E05插曲Girl be selling sunshine這個句子成分有疑惑，為什么要用助動詞原型be，這是錯句嗎？下面是chatgpt給出的答案，我覺得解釋得很合理，長知識了。

The phrase "girl be selling sunshine" is a metaphorical expression that means a girl or woman is radiating positivity, happiness, and warmth, much like sunshine. The phrase implies that the girl is very positive, optimistic, and energetic, and that her presence and personality have a positive impact on those around her. It can also be interpreted as a compliment, indicating that the girl has a bright and cheerful personality that is attractive and appealing. Overall, the phrase is a poetic way of describing a girl's positive outlook on life and the effect that it has on others.

The use of "be" in the phrase "girl be selling sunshine" is an example of African American Vernacular English (AAVE), which is a dialect of English spoken primarily by African Americans in the United States. In AAVE, the present tense form of the verb "to be" is often conjugated as "be" instead of "is" or "are." This is a common grammatical feature of AAVE and is used to convey a sense of ongoing or habitual action. In the phrase "girl be selling sunshine," the use of "be" suggests that the girl is always selling sunshine, meaning that she consistently exudes positivity and happiness.

Here are some examples of how the verb "be" is used in African American Vernacular English (AAVE):

He be trippin' - This means that he frequently acts in a foolish or irrational way.
She be working hard - This means that she is consistently or habitually working hard.
They be talking all the time - This means that they talk frequently or habitually.
We be going to the store every Saturday - This means that going to the store on Saturdays is a regular or habitual occurrence for us.
I be telling you the truth - This means that the speaker is always telling the truth, or that they are currently telling the truth.

In AAVE, the use of "be" can convey a sense of ongoing or habitual action, or emphasize the importance or frequency of an action or state.