|•||adverbial clauses, that usually comment on the verb in the main clause; these are particularly discussed in Chapter 7; although the expression was not used there;|
|•||adjectival clauses, usually known as relative clauses; these are particularly discussed in Chapter 8;|
|•||noun clauses, replacing a noun in a sentence, e.g. a subject or object, which have not been discussed already.|
This appendix brings the three types together so that you can compare them. I have used similar examples to help highlight the differences between them. You might want to get rid of some of your subordinate clauses; there are suggestions here for that too.
These are clauses that take the function of an adverb. Like single-word adverbs, they might talk about manner, place, time, degree and number. They might also make observations on causes, effects, purposes and limitations.
In other words, they answer the questions: how, where, when, how much, how often, why.
They always begin with a conjunction. Here are some examples of adverbial clauses, with the conjunction underlined.
Barbara finished her essay before she went to the pub with Abel.
Kim wants to enter the competition because she needs a laptop.