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are you native speaker?(english)
I suppose it's C
That doesn't help in the slightest.
they exist and i can help you if you help me with my english
beneficial for both
Err.. Sure? Dunno what you'd need to know, but I guess I can help.
i need help with tense and article
okay i trust you on word,
so lim x goes to 2(from left ) mean that x is approaching 2 from lef(there is minus)
Still here, go ahead.
so they ask you,when this happens (x is very close to 2 from left..1.99 1.999, 1.999 ...) then f(x) approaching what number? in your case f(x) is 3
it doesn't matter in this point so in x=2 function is defined or not.
So the solid lines would be f(x)?
yes it function f(x)
so it will be 3:-3 your answer
Alright, I see.. I may have another one for you if you're up to it. And of course any questions you have regarding your English lessons can be posted here (since tagging notifications aren't working for me in other topics)
okay just i'm confused with present perfect. why it is present if it describes action in the past.what is difference betwenn present perfect and past simple?i know that when time is defined you use past simple but still confused
You'll have to give me an example sentence so I can explain it.
okay i have bought a car and i bought a car two days ago
why it is called present?
you just did it, happen now. now is present
"I have" would imply "I did this in the past." However, it's in the present since it recently occurred.
mayby it happened like 30 years ago
is it still recently?
basically answer the question when the action was done
If it occurred that long ago, then you wouldn't say "I have bought" - this indicates something as new as a week ago.
i'm confused. for ex: i have been in france.. (mayby i was 30 years ago or smth,why i cant' use present perfect here? )
it occured that long
This is a different case. "I have been to France" is like saying "I did this before."
so i need generall concept no for specific.
so in present perfect you emphasize that for now i have done this thing(i don't focus on when it happend or under what circumstances..just point out that you have done that thing)????
but i don't get when people say: you use present perfect when time is unfinished? what means unfinished time?
There are different cases when you're trying to explain something. Usually people don't say "I have been," they abbreviate it with "I've been to France" just to show that they've gone there before. "Unfinished time" is usually something continuous, like the graph in the question.
and why it is used with present perfect?
time when you did this action is certainly finished
You'll have to gimme another example on that one.
just tell me why they connect "unfinished time" and "present perfect" if this connectin exist of course
"I have worked at the plant" explains that you've done this before, or you currently work at a power plant and do this on a daily basis. Although a lose explanation, it still serves its purpose. "I have *just* bought a car" explains that you've done this recently, within a week or so. "I have bought a car" suggests you've done this in the past, with no real set time.
If that helps.
okay. if i say that " i have lived here for 2 years.. does it mean that i'm still living here?
That just means you have done this, but the sentence is unclear on if you still do. Since you're saying "here," it would imply that you do.
okay if i say: i have lived in england for 2 years ..i understand that this means that i have done this(mayby when i was little,but it doesn't mean that i'm still living here) or so?
okay thanks very much .. just tell me your next question
but i'm little bit busy and mayby i can't reply right away
Here you go. http://i.imgur.com/tzeZ8NW.png
so just tell me what you don't get
I had thought that, but you'll have to explain WHY it's -3.
do you know the meaning of limits?what is it or so?
To be honest I'm not entirely sure, simply because they're giving me equations as definitions.