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Unit 1 Nouns£¬ articles and numbersLesson 1 Nouns£¬ articles and numbersUnit 2 PronounsLesson 2 Pronouns£¬ usage of ¡°it¡±Lesson 3 Indefinite pronounUnit 3 Phrasal verbsLesson 4 Phrasal verbsUnit 4 PrepositionsLesson 5 Prepositions of times£¬ place and othersUnit 5 Comparison of adjectives and adverbsLesson 6 Comparison of adjectives and adverbsReview 1Unit 1¡ª5Unit 6 TensesLesson 7 Present simple£¬ present continuous£¬ past simple and pastcontinuousLesson 8 Future simple£¬ future continuous and past futureLesson 9 Present perfect£¬ past perfect and time adverbialsLesson 10 Present perfect continuous£¬ contrast among tensesUnit 7 Modal verbsLesson 11 Modal verbs (1)£º present tense and simple past tenseLesson 12 Modal verbs (2)£º present perfect tense and present continuous tense£¬ for speculation andobligationReview 2 Units 6¡ª7Mid-term test Units 1¡ª7Unit 8 ¡°To¡± infinitivesLesson 13 ¡°To¡± infinitives as object and object complementLesson 14 ¡°To¡± infinitives as subject£¬ attributive£¬ predicative and adverbial ofpurposeUnit 9 Verb + ing and verb + edLesson 15 Verb + ing as subject£¬ predicative and objectLesson 16 Verb + ing / verb + ed as participle clauses and object complements