1) How many types of conditions are there in the English language? a) one b) three c) two d) four 2) When is an adverbial modifier of purpose is usually expressed by an infinitive? a) when the agent is the same as that in the principal clause b) when the agent is not the same as that in the principal clause c) when there are some conjunctions d) when the sentence is in literary style 3) When is an adverbial modifier of purpose is usually followed by the modal verbs "can/may"? a) when the agent is the same as that in the principal clause b) when the agent is not the same as that in the principal clause 4) When do we use 'should + infinitive' in the adverbial clause of purpose? a) the verb in the subordinate clause is the negative form b) both correct c) if the agent is not the same as in the principal clause d) no correct answer 5) Which cnjunction means 'so as not to'? a) in order that b) to c) so as to d) lest 6) What forms of the verb do we find in clauses of comparison introduced by 'as if/ as though'? a) were for all persons b) Past Indefinite c) Past Perfect d) all are correct 7) What type of mood do we usually find in sentences of real condition? a) Indicative b) Sobjunctive c) Conditional 8) What time period does the construction ' If + Past Indefinite + Present Conditional Mood' refer to? a) Present b) Both c) Future d) None 9) What time period does the construction ' If + Past Perfect + Past Conditional Mood' refer to? a) past b) present  c) future d) b, c 10) Split condition is... a) when two clauses refer to different time periods b) when two clauses refer to the same time periods c) when the principal clause refers to the future d) no correct answer 11) What time does the construction 'If + to be to + Conditional Mood' refer to? a) past b) only present c) present or future d) only future 12) What is the meaning of the construction 'If + should + infinitive + conditional mood' ? a) unlikely situation in the present  b) unlikely situation in the past c) unlikely situation in the future d) all are correct 13) What is the meaning of the construction 'If + would+ infinitive + conditional mood' ? a) a polite request b) a polite offer c) an unreal situation in the present d) an unreal situation in the future

ING-form vs Infinitive

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