What is the different between "Have you eaten your lunch ?" and "Did you eat your lunch yet ?"?
472705
The first statement is well written\n\nthe second is poorly constructed and hints of being aggressive...
352012
Use "have" or "has" if you're looking back at something in the past, which is referring to something further in the past and continued past one event.\n\nI like ice cream.  <-- now\nI liked ice cream yesterday, too.  <-- one event\nI have liked ice cream for a long time.  <-- happened many times in the past\n\nShe begins her homework after dinner most of the time.  <-- now\nShe began her homework late yesterday.  <-- one event\nShe has begun her homework late too many times for her mother to overlook it anymore.  <-- happened many times in the past\n\nI sing this song as much as I can.  <-- now\nI sang it thirty-two times yesterday.  <-- one time (yesterday)\nI have sung it so often by now that I even hear it in my sleep.  <-- happened often in the past
41950
If you are referring to time or distance, use “past”: “the team performed well in the past,” “the police car drove past the suspect’s house.” If you are referring to the action of passing, however, you need to use “passed“: “when John passed the gravy, he spilled it on his lap,” “the teacher was astonished that none of the students had passed the test.”
492620
Well, how about the thought of saying, "Would you like fries with that?"   Or how about, "Would you like me to fill-it up sir?" Or "Would you like paper or plastic?"
640980
Both sentences are grammatically correct when examined alone.\n\nThe first is talking about a situation in the present.  You would use this expression when you give a gift to someone.\n\nThe second is talking about a future situation.  You would use this expression when you were talking about a movie that the other person plans to see in the future.
412875
It sort of depends on the context you're using it in.  If you're talking to say, a kid, you'd use the first one.  But if you're talking to a friend that's looking for a job, you'd use the 2nd one.  It depends on how you use the sentences.  The first one is more of future tense, while the 2nd one is more present tense.
182090
If you don't ask, you don't get. If you do ask, you might or might not get. In this case, you asked a question. You got an answer. It may or may not be the answer you wanted. If you hadn't asked though, you wouldn't have gotten any answer at all.
957797
The basic approach sounds fine but it might be less threatening if you soften it a little. Instead of:\n\n"if you are free at 5 on tuesday, and like chinese food, i'm buying you dinner."\n\nTry:\n\n"if you are free at 5 on tuesday, and like chinese food, i would like to buy you dinner."\n\nSubtle difference, but much more neutral.
184391
Neither. But, you might Check-mark your list.\n\nI was check-marking my grocery list yesterday.
908378
an 'infinitive' does not express time (tense) or person (who is doing the action)   To eat is to live.  We don't know or care who is eating or when.\n\na 'finite' verb has a time and a person.\nI eat (I is the person, now is the time)\nHe was eating when the phone rang.  (he is the person, past is the time)\n\nI find it clearer in French/German, where the finite verb is clearly formed from the infinitive--then I can say that the finite verb changes its endings, while the infinitive ends in (-er, -ir, -re, -en, -n etc depending on language.)
518601
"ON" ??? or WITH??? OR both??? Or either???\n\nWait until you don't need TIPS, because you've matured enough to have figured it out without coming to Q & A
1177241
the first one was in past tense and the other one is in past progressive tense\nthe meaning is the same. the difference is how the sentence was constructed
1171484
Sorry, Dakota and Sarah are mistaken.  The use of the different tenses has nothing at all to do with who told me.\n\n#1 is the PAST tense\n#2 is the PRESENT PERFECT tense.\n\nThe first is used for something that took place at some definite point in the past.   Thus you can add a specific time:  "Last Thursday I heard."  (You CANNOT say, "Last Thursday I have heard..." )\n\nThe second -- the present perfect--   is trickier to get.   It is used for something that happened, or at least began at some "unspecified time" in the past.   It's the form you're likely to use to emphasize that you have had this experience (of hearing such a report).   You may use it when you want to say that it the experience took place several times, or even that it is continuing right up to the present.\n\n(In other words "have heard" is vague NOT about the source, but about the TIME.)\n\n\nFor examples of these basic uses of the present perfect, one of more of these may help:\nhttp://www.englishpage.com/verbpage/presentperfect.html\nhttp://esl.about.com/library/grammar/blpresperfect.htm\nhttp://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/upperf.htm\nhttp://www.eclecticenglish.com/grammar/PresentPerfect1A.html
791670
strawberry!!!\nis that what we are having for lunch, again?
485191
The first one would be better if you said "I have seen that movie ten times already."\nOr, if you prefer, you could say "I have watched/seen that movie ten times."\n\nThe second would be better if you said "I lived in China for five years."\n\nIf you STILL live in China you would need to say "I have been living in China for five years."
1115359
The egg from something like a chicken.\n\nOr, from another point of view,\n\nThe egg came for breakfast and the chicken for lunch!
847334
Please be more specific with your questions, as I do not know what you are trying to ask here. Alse check your spelling. I think you meant to write 'launching' instead of 'lunching'.