Begin

This is more common:

He began to get busy.

MM, would you come up with an example in which "begin to be" works fine?

...close to becoming majority Latino or having a significant Latino electorate understand that they must begin to be responsive to that community

...will Barack Obama begin to be seen as a front-runner?

I hope that relationships can begin to be

Except the first one, your "to be"s are "to+ passive."

When the complement is an adjective, which do you think works better; "become" or "begin to be"?

TakaExcept the first one, your "to be"s are "to+ passive.

You didn't ask me to except them.

TakaWhen the complement is an adjective, which do you think works better; "become" or "begin to be"?

Context, context.

Mister Micawber Context, context.

Then could you tell me which is for which?

No, you give me your sentence and I'll tell you which one I like...if I have any preference.

Then what about these? Do you think they are equally fine?

You will become unaware of wearing it.
You will begin to be unaware of wearing it.

And what about these?

He will become rich.
He will begin to be rich.

If you think they all work equally fine, do you think they have the same meaning? If you think they are OK but they a

The two 'begin to be's refer only to the initialization, rather than the condition (which is the thrust of the statements, I think). Therefore they sound odd.

Could you elaborate what your "initialization" really is? I'm not sure if I understand it.

Does it mean that "begin to be..." refers only to the point where things are started?