WHEN IS THE 'H' SOUND NOT PRONOUNCED IN ENGLISH:

 In general, there is no rule in English to tell you when to pronounce the 'h', but it is rarely silent. So you have to learn the exceptions as they come along. Usually they turn out to borrowings from French, like 'honest', 'honour', 'heir', 'exhaustion', 'Thailand', 'vehicle', 'ghost', 'ghetto' and 'hour'.
The words starting with a silent 'h', if preceded by the indefinate article must have the 'an' version. For example, we'd say 'an honest fellow'. Hope that helps.
http://www.clasesinglesonline.com

WHEN IS THE 'H' SOUND NOT PRONOUNCED IN ENGLISH:

 In general, there is no rule in English to tell you when to pronounce the 'h', but it is rarely silent. So you have to learn the exceptions as they come along. Usually they turn out to borrowings from French, like 'honest', 'honour', 'heir', 'exhaustion', 'Thailand', 'vehicle', 'ghost', 'ghetto' and 'hour'.
The words starting with a silent 'h', if preceded by the indefinate article must have the 'an' version. For example, we'd say 'an honest fellow'. Hope that helps. http://www.clasesinglesonline.com

MIXING COMPARATIVES AND SUPERLATIVES

Many of our English as a foreign language students use a comparative when a superlative should be implemented. For example, a student might say something like ‘tea is the more popular drink in England’. Obviously, the superlative ‘most’ must be used here (i.e. el más popular). As you can probably see, we can’t use ‘more’ since this is the comparative version. Thus, we should use ‘tea is the most popular drink’. http://www.clasesinglesonline.com