http://www.englishforums.com/English/GeneralEnglishGrammarQuestions/Forum12.htmAsk your questions on grammar and get your sentence checked. We answer lots of different types of general English grammar questions here.enCSMOD (Build: 3273.32735)http://www.englishforums.com/English/ComparsionSentences/gmjrd/post.htm#562686Fri, 05 Sep 2008 04:20:10 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:562686Clive0http://www.englishforums.com/English/ComparsionSentences/gmjrd/post.htm#562686http://www.englishforums.com/English/comments12-562686.xmlHi,</p> <p>I&#39;m glad you posted this again, because the earlier thread in which we were discussing it seems to have been deleted.<br /><br />I told you the first sentence, for example,&nbsp;was basically impossible to understand as written. ie<br /><span style="TEXT-DECORATION:underline;"><font color="#295b8b"><strong>The present</strong></font></span><span><strong> </strong><a style="COLOR:#295b8b;TEXT-DECORATION:underline;"><strong>invention</strong></a><strong> has any advantageous effect different from that of&nbsp;another invention<br /><br /></strong>Can we look at a simpler example? <strong>eg </strong></span><span><strong>The taste of Pepsi is better than that of Coke.<br /></strong>If I understand your question correctly, you are asking if the words&nbsp;&#39;that of&#39; are grammatical.<br />Yes, they are fine. &#39;That&#39; refers to &#39;the taste&#39;.<br /><br />Note that&nbsp;&#39;that of&#39; is often omitted in everyday speech and informal writing, ie <span><strong>The taste of Pepsi is better than&nbsp;Coke.<br /></strong>However, use &#39;that of&#39; in more careful speech and writing, because you are comparing<span style="text-decoration:underline;"> <em>taste</em> to <em>taste</em></span>, not <span style="text-decoration:underline;"><em>taste </em>to<em> Coke</em></span>.<br /><br />If my Coke/Pepsi example is not the kind of thing you are asking about, please supply another&nbsp;simple example. <br /><br />Best wishes, Clive</span></span><div style="clear:both;"></div>http://www.englishforums.com/English/ComparsionSentences/gmwpq/post.htmFri, 05 Sep 2008 02:44:54 GMT946f00bb-57d3-4b7b-a9a2-059b5341af52:562665Anonymous1http://www.englishforums.com/English/ComparsionSentences/gmwpq/post.htmhttp://www.englishforums.com/English/comments12-562665.xml<span style="TEXT-DECORATION:underline;"><font color="#295b8b"><strong>The present</strong></font></span><span><strong> </strong><a style="COLOR:#295b8b;TEXT-DECORATION:underline;"><strong>invention</strong></a><strong> has any advantageous effect different from that of&nbsp;another invention</strong>.&quot;</span><br /><br />My question is &quot;should the use of that in the above be considered incorrect grammatically&quot;&nbsp; So, the above sentence should be rendered like <br /><span>this &quot; <span>The present</span><span> <span>invention</span> has any advantageous effect different from the demonstrated <span>invention</span>.&quot;</span></span><br /><br />Q 2<br /><br />Likewise, <br /><br />&quot; <strong><span><span>There has been no&nbsp; difficulty or advantageous effect&nbsp;of the present invention different from that of another&nbsp;i</span><span>nvention</span>.&quot; </span><br /><br /></strong>In the same vein as under Q 1, should the use of &quot;that of&quot; in the above be considered grammtically incorrect.&nbsp; I am a little unsure whether the above sentence is grammtically correct or not.<br /><span><span>Should the above sentnece be rendered as &quot; There has been no <span>constitutional</span> difficulty or advantageous effect therefrom different from another demonstrated </span><span>invention</span>.&quot;</span><br /><br /><span>Thanks for your answers and time in <span>advance</span></span><div style="clear:both;"></div>