I had a bowl of warm noodles. Wide awaken, I started to work on my assignment.

Can I say "Wide awaken" at the beginning of a sentence?
You can't say it anywhere, as far as I can think.

Wide awake, I started to work on my assignment.
What's the difference between awake, awaken and awakened?
Students: We have free audio pronunciation exercises.
Awake: Completely conscious; not in a state of sleep.

Awaken: (cause to) become awake or conscious

Awakened: past and pp of awaken.

Wide awake: fully awake; with the eyes wide open.
It seems like awaken and wake are interchangable, am I right?

Stop screaming. I don't want your screaming to wake/awaken the baby.
There are at least 5 verbs-- awake, awaken, wake, waken, and wake up-- all in a confused jumble. Here's what the Am Heritage Dictionary has to say about some of them:

The pairs wake, waken and awake, awaken have formed a bewildering array since the Middle English period. All four words have similar meanings, though there are some differences in use. Only wake is used in the sense “to be awake,” as in expressions like waking (not wakening) and sleeping, every waking hour. Wake is also more common than waken when used together with up, and awake and awaken never occur in this context: She woke up (rarely wakened up; never awakened up or awoke up). Some writers have suggested that waken should be used only transitively (as in The alarm wakened him) and awaken only intransitively (as in He awakened at dawn), but there is ample literary precedent for usages such as He wakened early and They did not awaken her. In figurative senses awake and awaken are more prevalent: With the governor's defeat the party awoke to the strength of the opposition to its position on abortion. The scent of the gardenias awakened my memory of his unexpected appearance that afternoon years ago.
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Gosh. They are really confusing. Thanks, MM.