Shun replied:EX: "I have seen him (inging) in the past week"
Even though the participle ('-ing') is not there on the surface for the naked eye to see, it's there underlyingly as part 'n parcel of the verb's meaning.
Ok. That's pretty funny :D , I gotta admit. Joking aside for the moment, though, you've asked a very good question: How do we know what's been omitted? I agree. It's difficult to learn how to use a language when speakers consistently leave out words, the meaning of which they know intuitively and hence the reason for leaving them out. (English, by the way, is not the only culprit there, lemme tell ya :( ). For speakers who lack that intuitive knowledge, or native like knowledge, there are ways to gaining it. One of which is studying a language's grammar: Knowing things like the structure of verbs for example, tells us a lot about what's underlying, what can be omitted, and why speaker's omit words.If we [can't] depend on what we can['t] see, how can I know if there are how many words there underlying:
Cas Ex: I've seen you (doing something) under the bridge at night
(I am joking, as I see nothing at nights, especially under the bridge). :wink:
Take the fact that 'have seen' takes a gerund or an infinitive as its object, and, moreover, that the meaning of that object is inherent within the verb (part n' parcel) and so it can be omitted from the sentence without changing the meaning of 'have seen'.
Knowing the function and distribution of any given part word or phrase, provides us with a better understanding as to why a sentence like "I have seen him in the past" appears to negate the rules. It doesn't negate the rule; it nicely supports it. Present participles and "for the past week" both express continuity and so the reason why they are compatible. The main verb 'have seen' is not compatible with "for the past week", which is where you and I agree. So you have proven Grammarians right :D : 'past time adverbials' are not compatible with Present Perfect verb forms, which you've kindly proven, once more, with your last examples:
Both of the sentences above are ungrammatical. The 'past time adverbial' "yesterday" is not compatible with Present Perfect verb forms, just as da' Man said, nor is it compatible with Present Participles, 'ing'. One expresses continuity, whereas the other does not.Ex: I have seen him yesterday.
Ex: I have seen him (jogging) yesterday.
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