THE ADVERB CLAUSE.

+Hints for Oral Instruction+.--You learned in Lesson 83 that an adverb can
be expanded into an equivalent phrase; as, The book was _carefully_ read =
The book was read _with care_.

We shall now learn that a phrase used as an adverb may be expanded into an
+Adverb clause+. In the sentence, _We started at sunrise_, what phrase is
used like an adverb? +P+.--_At sunrise_. +T+.--Expand this phrase into an
equivalent clause, and give me the entire sentence. +P+.--We started _when
the sun rose_.

+T+.--You see that the phrase, _at sunrise_, and the clause, _when the sun
rose_, both modify _started_, telling the time of starting, and are
therefore equivalent to adverbs. We will then call such clauses +Adverb
Clauses+.


Analysis and Parsing.

+Model.--+

We | started
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\
` when
sun \ rose
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\the