Sentence: WOW, an Icelandic budget airline, is to start fares from US to Ireland for less than $350 return, including all taxes.
So, why did the writer use the infinitive form of the verb TO BE in that sentence? What's the meaning?
Also, for this example:
Am I to believe in that? x Am I supposed to believe in that? x Should I believe in that?
The first sentence above is the one that I don't get the meaning. Could anyone please what is the difference between them?