問d低能英文問題

These questions pertain to the more complex aspects of the English language, and are by no means dumb questions..

(1) "If they think it would dispute their schedules, it's time they switched to other airlines" is a "type 1 and type 3 mixed conditional sentence, so the second part of the sentence is in simple past tense because the condition could not be fulfilled due to the fact that they didn't think it would dispute their schedules, and therefore didn't switch to other airlines. The following Website is one of many sites explaining the use of conditional sentences:
http://www.ego4u.com/en/cram-up/grammar/conditional-sentences

(2) The following Website has a list of letters that are silent under certain circumstances.
http://esl.about.com/od/speakingenglish/a/silent.htm
"K" is always silent before "n"; "h" is silent before a vowel for certain words, such as "hour" and "Rihanna". For iron, the "r" is pronounced lightly, so iron is pronounced as eye-ern.

As described in the Website above, normally "u' is silent before a vowel, but for "persuade", the "u" before the "a" is pronounced as "w", so the sound you heard is "wade", not "ray". The following Website talks about the pronunciation of "persuade":
http://books.google.ca/books?id=9OJDAAAAYAAJ&pg=PA50&lpg=PA50&dq=why+is+the+u+in+persuade+pronounced+as+w+?&source=bl&ots=eEGh092zbj&sig=KqmMjR53DXYUROLlvl5LRj_2DsM&hl=en&sa=X&ei=0VFWUaz0MsjRyQHvnYHQCQ&ved=0CD4Q6AEwAjgK#v=onepage&q=why%20is%20the%20u%20in%20persuade%20pronounced%20as%20w%20%3F&f=false


2013-04-01 06:36:07 補充：
'If they think that it would dispute their schedules, it('s) time they switched to other airlines.'
如果他們認為它(這航空公司)會容納不了他們的行程安排，他們已經會覺得是時候轉換到其他航空公司了。