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Eye contact and facial expressions provide important social and emotional information. People, perhaps without consciously doing so, probe each other's eyes and faces for positive or negative mood signs. In some contexts, the meeting of eyes arouses strong emotions. In some parts of the world, particularly in Asia, eye contact can provoke misunderstandings between people of different nationalities. Keeping direct eye contact with a work supervisor or elderly people leads them to assume one is being aggressive and rude — the opposite reaction of most Western societies. Eye contact is also an important element in flirting, where it may serve to establish and gauge the other's interest in some situations. Mutual eye contact that signals attraction initially begins as a brief glance and progresses into a repeated volleying of eye contact, according to Beverly Palmer, Ph.D. and professor of psychology at California State University, Dominguez Hills. In the process of civi

Matricea inversabila ∆≠0 Sistem compatibil ∆=0, ∆c=0            incompatibil ∆=0, ∆c≠0            compatibil determinat ∆≠0                         nedeterminat ∆=0           omogen cu solutii netriviale / nenule ∆=0 n>r(a)

Future Simple ·          Decisions taken at the moment of speaking “It’s cold in here. I’ll turn on the heating” ·          Hopes, fears, threats, offers, promises, warnings, predictions, requests, comments with expect, hope, believe, I’m sure, I’m afraid, probably “I hope he’ll like his birthday present” ·          Actions or predictions which may (not) happen in the future “She’ll probably win ·          Actions which we cannot control and will inevitable happen “The baby will be born after Christmas” ·          Things we are not yet sure about or we haven’t decided to do yet “Maybe I’ll buy a car” ·          Shall is used after I/we in questions, suggestions, offers or when asking for advice “Shall we play tennis?” Be going to ·          Actions intended to be performed in the near future “I’m going to buy some new clothes next week” ·          Planned actions or intentions “Now that she’s rich, she’s going to travel round the world” ·          Evidence that something will

Past Simple ·          Past actions which happened one immediately after the other “He got in the car, started the engine and drove off” ·          Past habits or states “He used to walk to work every day” ·          Complete actions or event which happened at a stated past time “She passed her exam last week” ·          Complete past actions not connected to the present with a stated or implied time reference “Elvis Presley made lots of records” (Elvis is dead; he won’t record anymore – period of time now finished – implied time reference) Expressions: yesterday, last week, (how long) ago, then, just now, when, in 1992 Past Continuous ·          Action in the middle of happening at a stated time “I was living in Spain this time last year” ·          Past action in progress interrupted by another past action. The longer action is in the Past Continuous, the shorter action is in the Past Simple “I was playing football when I broke my ankle” ·          Two or more simultaneous p

Present Simple ·          Permanent situations or states ·          Permanent truths or laws of nature ·          Repeated/habitual actions ·          Reviews/sports/commentaries/ dramatic narrative “Pavarotti songs wonderfully in this opera” ·          Timetables/programs (future meaning) “The race starts at 3:00” ·          Exclamatory sentences “Here comes the bride” Expressions: every day/week/month/year, usually, sometimes, always (every day), rarely, never, often, in the morning/evening/afternoon, at night, on Mondays Present Continuous ·          Temporary situations “She is working in Paris this week” ·          Changing or developing situations “Mary is putting on weight” ·          Frequently repeated actions with always, constantly, continually expressing annoyance or criticism “He’s always asking stupid questions” ·          Actions happening at or around the moment of speaking ·          Fixed arrangements in the near future “I’m seeing Rachel tonight” Express