Proper Grammar for "Seen" and "Saw"?
597095
Have you seen that movie yet?  I saw it yesterday.\n\ndoes that help?
144176
"in" is grammatically correct
467223
left\n\nExamples:\n\nI will leave. or I am leaving. -> I left.  or  I have left.\n\nWill he leave? -> Has he left?
66520
"Grammar"\n\nIn the second half of your continueing sentence you are referring back to the first half when it should be treated as two seperate sentences at a minimum.
754603
I'd advice you to ignore, frankly, some of the advice you've been given on this thread. The four options you put forward are in the following tenses: (1) simple past; (2) present perfect; (3) past perfect; (4) future perfect. Hence, the present perfect of the sentence is "Norman has studied algebra".
511831
That is a correct present perfect progressive passive sentence construction, except you would need to keep the "on", not put it in parenthesis. However, it is a very awkward sentence. Passive voice is best avoided unless you have no choice because you don't know the agent of the verb, or because you are trying to make a point. Passive voice becomes even more convoluted in the progressive (continuous) tenses. There are other ways of expressing the same thing. \n\nThe point is, though, you did construct a proper sentence.\n \nPresent perfect = have/has + past participle of the next verb. \nProgressive/continuous = form of "be" + present (-ing) participle of the next verb. \nPassive voice = form of "be" + past participle of the next verb. \nPut that together and you get Have + past participle of be/been + present participle of be/being + past participle of cheat/cheated. (Present perfect progressive passive voice)\n\nHave been being cheated.
497989
I think thare´s a specific kind of pastic for that. In my country (Argentina) it´s called "parsec". Check it in yours.
1002896
there are tenses and aspects\n\npast simple, continous, perfect\n\npresent simple, continous, perfect\n\nfuture simple, continous, perfect
814045
Try http://forum.wordreference.com/forumdisplay.php?f=6\n\nIt's WordReference English Only forum.  Ask people a sensible question about grammar, usage, word origins, and you'll get an intellingent answer from other users.
839849
the 'to watch' is the infinitive verb
675750
FOR is followed by a noun (sometimes a gerund) and\nIN ORDER TO is followed by a verb
1156874
Ask the experts on this field and that would be teachers/instructors who had been teaching the English Grammar for so so so long.  Better still hear them first when they talk and ask them personally of the correct usage.
975402
c is the correct answer. The helping verbs are    has, have had, do, does, did, be, am, is, are, was, were, been, can, could, shall, should, will, would, may, might, must, being
405118
1.  When did you buy your car?\n\nObviously you have a car.  Therefore you must have bought it in the past.  It is therefore considered to be a past action.  For past actions we use the simple past tense.\n(Answer: I bought it in 2004.)\n\n2. I've known her for three months.\n\nWe use the present pefect simple with 'stative' verbs like 'know'.  Stative verbs do not usually have a continuous ('-ing') form.  So, 'I've known her for three months' BUT 'I've been learning to drive for six weeks'.  (Present perfect continuous)\n\nI recommend 'English Grammar in Use' by Raymond Murphy (Cambridge University Press).
885109
"visited" here menas "attended". It could also mean "studied at."
773825
http://www.longman.com/ae/azar/grammar_ex/message_board/archive/articles/00179.html\n\nhttp://www.edufind.com/English/grammar/ING3.cfm
1002760
How do you spell (to, too, or two)?