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Cursos de Ingles Gratis Certificado OM Personal, Aprender Ingles Gratis con diploma por Internet, Curso Gratis de Ingles Online, Ingles Virtual Free Gratuito Multimedia por Computadora. English Grammar Online - Rules and Explanations. WeSpeke. APRENDER INGLÉS NIVEL B2. Enlace muy interesante para preparar exámenes de inglés. Web para aprender ingles de forma gratuita. English Grammar Lessons. Present Perfect Simple vs Present Perfect Progressive. Exercises and Tests Form See also explanations on Present Perfect Simple and Present Perfect Progressive Use Both tenses are used to express that an action began in the past and is still going on or has just finished.

Present Perfect Simple vs Present Perfect Progressive

In many cases, both forms are correct, but there is often a difference in meaning: We use the Present Perfect Simple mainly to express that an action is completed or to emphasise the result. Result or duration? Do you want to express what has happened so far or how long an action has been going on yet? Certain verbs The following verbs are usually only used in Present Perfect Simple (not in the progressive form). state: be, have (for possession only)Example: We have been on holiday for two weeks. senses: feel, hear, see, smell, taste, touchExample: He has touched the painting. brain work: believe, know, think, understandExample: I have known him for 3 years. So that — Grammar Exercises & Practice. Scientists are studying meteorites.

So that — Grammar Exercises & Practice

Their intent is to understand the bio-origins of the meteorites. The scientists look carefully at the composition of meteorites. The purpose is to learn about comets, exploding stars and other phenomena. Astronomers track where fragments fall. They do this in order to recover them. Astronomers have recovered several meteorites in this manner. Consequently, he and his team spent a week looking for the fragments. Astronomers (n.) – scientists who study the cosmos (comets, planets, stars, etc.) bio-origin – biological origin, composition, what they come from estimate (v.) – calculate, predict, an educated guess fragments (n.) – pieces that break away from something larger metallic (adj.) – having the appearance of metal meteor (n.) – a small piece of a comet, asteroid, or exploding star that travels through the atmosphere of Earth meteorite (n.) – a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid.

Microsoft Word - so vs so that.doc - So vs So That.pdf. Adjective Preposition Combinations Exercise - gr.adjprep.pdf. Adjective Preposition Combinations Quiz - about at by for from. English Prepositions Combinations Adjective + Prepositions. Adjectives are used in simple sentences to describe people and objects.

English Prepositions Combinations Adjective + Prepositions

For example, She is an interesting speaker. More complex sentences use adjectives + prepositions to make statements about a person's attitude towards something. For example, She is excited about the concert tonight. Here is a list of the most common adjective + preposition combinations to express people's feelings. Use the following adjectives followed by 'about'. Angry / annoyed / furious about something Example: I'm really angry about our losses on the stock market! Use the following adjectives followed by 'at'. Good / excellent / brilliant at something OR at doing something Example: They are excellent at planning fun parties. Use the following adjectives followed by 'at' or 'by'. Adjective + Preposition Combinations Followed by Gerunds. Present Perfect and Simple Past. Simple Past vs. Present Perfect Simple.

Exercises and Tests Form See also explanations on Simple Past and Present Perfect Simple Use In British English, the use of Simple Past and Present Perfect is quite strict.

Simple Past vs. Present Perfect Simple

As soon as a time expression in the past is given, you have to use Simple Past. Note that the following explanations and exercises refer to British English only. English Grammar Lessons. Simple Past vs. Past Progressive. Exercises and Tests Form See also explanations on Simple Past and Past Progressive Use After another or at the same time?

Simple Past vs. Past Progressive

Do you want to express that the actions in the past happened one after another or at the same time? New action or already in progress? If you want to express that a new action happened in the middle of another action, you need both tenses: Simple Past the new action and Past Progressive for the action already in progress. Only mentioning or emphasising progress? Do you just want to mention that an action took place in the past (also used for short actions)? Certain Verbs. Present Simple or Present Continuous? Simple Present vs. Present Progressive. Exercises and tests Form See also explanations on Simple Present and Present Progressive Use In general or right now?

Simple Present vs. Present Progressive

Do you want to express that something happens in general or that something is happening right now? Timetable / Schedule or arrangement? Do you want to express that something is arranged for the near future?