The homework is hard <b><font color="#ff1493">for</font></b> me to finish. <br/><br/><i>Can I say "The homework is hard <b><font color="#ff1493">to</font></b> me to finish."?</i><br/><br/>Dry carbon dioxide is not corrosive <b><font color="#ff1493">to</font></b> the pipeline.<br/><br/><i>Can I say "Dry carbon dioxide is not corrosive <b><font color="#ff1493">for</font></b> the pipeline."?</i><br/><br/>It is an insteresting thing <font color="#ff1493"><b>to</b></font> me.<br/><br/><i>Can I say "It is an insteresting thing <b><font color="#ff1493">for</font></b> me</i>.<i>"?</i><br/><br/>I wonder that in which situation I have to use "<i>for</i>" and which I have use "to"?<br/><br/>Thanks in advance<br/><br/>#Stephen Lai#