November 2012

Active and passive voice: overview chart

November 30, 2012

Here is a quick overview of the active and passive voice verb forms. Tense Active voice Passive voice Simple present tense Verb form: first form of the verb Examples They speak English here. He speaks English.   Verb form: is / am / are + past participle form of the verb Examples English is spoken […]

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Using the present perfect tense

November 29, 2012

Form: has / have + past participle form of the verb Affirmative Negative Question I have worked. I have not worked. Have I worked? He has worked. He has not worked. Has he worked? She has worked. She has not worked. Has she worked? They have worked. They have not worked. Have they worked? We […]

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Using must, should and ought to

November 28, 2012

We use must in affirmative sentences to say what is necessary and to give strong advice and orders to ourselves or other people. Children must learn good habits. (Necessity) Our companies must increase their productivity. (Necessity) You really must stop smoking. (Necessity) That child must learn to say ‘thank-you’. Talking about obligation Must can be […]

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Should with perfect infinitive

November 27, 2012

Should can be used with the perfect infinitive (have + past participle). This structure has several meanings. Should have + past participle This structure is used to talk about past events which did not happen. I should have posted that letter yesterday itself, but I forgot. She should have knocked at the door before entering […]

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Changing sentences in the simple present tense into passive

November 26, 2012

When the active verb is in the simple present tense, we make passive verb forms with is/am/are + past participle form of the verb. Note that the object of the active verb becomes the subject of the passive verb. The subject of the active verb becomes the object of the passive verb. However, in most […]

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Passives: some special points

November 25, 2012

Some verbs can be followed by two objects. The objects usually refer to a person (indirect object) and a thing (direct object). The indirect object usually comes before the direct object. We can also put the indirect object after the direct object. In this case, we will use a preposition like to or for. Examples […]

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Time adverbs used with the present perfect tense

November 24, 2012

The present perfect tense is commonly used with the indefinite time adverbs never, ever, before, yet, already. Have you ever been to the USA? I have never seen a kangaroo. I have seen her before. They have already arrived. She has not received the parcel yet. The present perfect tense is not used with adverbs […]

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Present perfect continuous tense

November 23, 2012

Form: has / have + been + ing form of the verb Affirmative Question Negative I have been working. Have I been working? I have not been working. He has been working. Has he been working? He has not been working. She has been working. Has she been working? She has not been working. They […]

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Difference between present perfect and present perfect continuous tenses

November 22, 2012

The present perfect continuous tense is used to talk about a continuous, but not necessarily finished action or situation. The present perfect tense is used to talk about a finished action or situation. Compare: I have been gardening since morning. (Focus on continuity) I have planted several new saplings. (Focus on completion) I have been […]

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Simple present and present perfect tense

November 21, 2012

We have already learned that the simple present tense is used to talk about routines. The present perfect tense is used to talk about events that have just completed. Study the following sentences. He goes to office every day. (Routine) He has just gone to office. (Just completed) We paint the walls every year. (Routine) […]

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