http://glottopedia.org/index.php?action=history&feed=atom&title=Look-ahead 2026-04-22T02:06:56Z Revision history for this page on the wiki MediaWiki 1.34.2 http://glottopedia.org/index.php?title=Look-ahead&diff=7943&oldid=prev 2009-02-16T21:09:50Z

<p>utrecht</p> <p><b>New page</b></p><div>'Look-ahead' is an intuitive term for the phenomenon that certain grammatical principles filter out derivations which under [[local economy]] can only be filtered out by looking ahead to a later stage in the derivation. &lt;br /&gt; Instances of look-ahead in Chomsky (1995) are: &lt;br /&gt; - determining which features are uninterpretable at the interfaces and hence must be deleted (by either movement or merger of an element with matching features) &lt;br /&gt; - determining which element projects when two elements are [[merge]]d &lt;br /&gt; - [[global economy]] principles like [[Procrastinate]]&lt;br /&gt; Chomsky (1998) tries to do away with look-ahead by applying [[Spell-Out]] and [[LF]]-interpretation cyclically to [[phase]]s.<br /> <br /> === Example ===<br /> <br /> In general, Procrastinate bars overt movement to weak checking positions. In some cases, however, Procrastinate can be violated:<br /> <br /> (i) What did you see?<br /> <br /> In (i) ''what'' is moved from a weak position (case in vP) to a strong position (Q in CP). Overt movement to weak checking positions can only occur when it is followed by movement to a strong checking position, and so it seems like you have to look ahead in the derivation to determine whether overt movement to a weak position is allowed.<br /> <br /> === Link ===<br /> <br /> [http://www2.let.uu.nl/UiL-OTS/Lexicon/zoek.pl?lemma=Look-ahead&amp;lemmacode=1535 Utrecht Lexicon of Linguistics]<br /> <br /> {{dc}}<br /> [[Category:Syntax]]</div>

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