three grammatical question..plz help me!

1font00Hello guys~02font02br
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01font00Here are three Grammatical questions that I'm unable to figure out.05002font02br
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01font00Would U mind giving me a hand?05102font02br
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01font00Thanks a lot!02font02br
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01font001. One02font00 01u01font00may as well02font00 02u01font00not know a thing at all02font00 01u01font00as02font02u00 01font00know it imperfectly. 02font02br
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01font00＞ Can you tell me the meaning of the underlined words and the usage of this structure?02font02br
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01font002. Heaven02font00 01font00"be"02font00 01font00praised. 02font02br
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01font00 ＞ What’s the meaning of this sentence? Why we adopt “be” instead of “is” or “was”? Here, is “be” an auxiliary verb? 02font02br
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01font003.02font00 01font00 "May"02font00 01font00success be yours! 02font02br
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01font00＞ I know that “may” here suggest wishing or hoping. But can anyone tell me the usage of this word? If you could, please give me some examples!02font02br
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00Thanks again! ^_^010id611id1