Holiday resorts which are very crowded are not very pleasant.
C.-adverbial clauses:
However hard I try I can't remember people's names.
Ⅱ.Grammar Exercises
1.Decide if each item below is a simple sentence or just a phrase.
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Unit 1 The Parts of a Sentence
Unit 2 The Structure of a Sentence
Unit 3 The Types of a Sentence
Unit 4 Word Order
Unit 5 Agreement of Subject and Verb
Unit 6 Verbs Ⅰ Forms
Unit 7 Verbs Ⅱ Tenses
Unit 8 Verbs Ⅲ Mood and Voice
Unit 9 Verbs Ⅳ Number
Unit 10 Auxiliary Verbs
Unit 11 Modal Verbs Ⅰ
Unit 12 Modal Verbs Ⅱ
Unit 13 Pronouns
Unit 14 Adjectives and Adverbs
Unit 15 Infinitives,Participles and Gerunds
Unit 16 Determiners
Unit 17 Noun Clauses
Unit 18 Relative Clauses
Unit 19 Adverbial Clauses
Unit 20 Conditional Clauses
Answers to Exercises