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§ 2. Forms of the infinitive.

Tense

Voice

active

passive

present infinitive

(to) ask

(to) be asked

present progressive infinitive

(to) be asking

perfect or past infinitive

(to) have asked

(to) have been asked

perfect/past progressive infinitive

(to) have been asking

Passive Present Progressive and Perfect Progressive infinitives are ra­rely used.

The Present Infinitive refers to the present or future. We plan to redu­ce our energy consumption in the New Year. The present Progressive Infi­nitive expresses an action happening now. We appear to be making very good progress. The Perfect Infinitive is used to show that the action of the infinitive happened before the action of the verb. The problem seems to ha­ve occurred during the night. The Perfect Progressive Infinitive is used to emphasize the duration of the action of the infinitive, which happened before the action of the main verb. He looks tired. He seems to have been working all night.

§ 3. The 'to-infinitive' is used:

  • to express purpose. He went to university to become a manager,

  • after certain verbs (agree, appear, decide, expect, hope, plan, pro­mise, refuse, etc.). She refused to pay the bill,

  • after certain adjectives (happy, glad, sorry, etc.). We were happy to open a new store)

  • after 'I would like/would love/would prefer' to express specific pre­ference. I'd like to see the manager,

  • after certain nouns. What a surprise to see you here! Our decision to wait was wise. It was her wish to help us;

  • after 'too/enough' constructions. We've got enough money to pay the;

  • with: 'it' + 'be' + adjective (+ of + noun/pronoun). It was genero­us of him to offer $ 1000;

  • with: 'so' + adjective + 'as'. Would you be so kind as to help me?

  • with 'only' to express an unsatisfactory result. She came in only to find the manager had left)

  • after: 'be + the first/second/etc/next/last/best', etc. He is ahvays the last to come to work;

  • in the expression: 'for' + noun/pronoun + to-infinitive. For him to be so rude was unforgivable;

  • in expressions such as: to tell you the truth, to begin with, to be honest, etc. To tell you the truth, this company has a very stable po­sition in the market;

  • after: verb + 'how/what/when/where/which/why\ / didn't know how to explain my absence.

§ 4. The bare infinitive is used:

  • after: most modal verbs (can, must, will, etc.). The meeting will be held at 2;

  • after: 'had better/would rather/would sooner'. You'd better call our distributors at once;

  • after: 'make/let/see/hear/feeP + object. They made him pay for the damage. But: in the passive: be made/ be heard/ be seen + to infini­tive. He was made to pay for the damage;

  • 'know' and 'help' are followed by a to-infinitive or bare infinitive. Could you help me (to) fill in this form? But: in the passive: be known, be helped + to infinitive. This company is known to be reliable.