The government is yet to comment about that.
The government - subject/NP;
is yet to comment about that - predicate/VP;
is - the head of VP/predicator/V
yet to comment about that - predicative complement/AdvP;
about that - adjunct/PP.
Is my analysis correct?
The sentence is ungrammatical. The government has yet to comment, not is.
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The sentence is ungrammatical. The government has yet to comment, not is.