English is the hardest language to learn. In one of my college courses they gave us this test to show us just how hard it is for a Spanish/French/Anything else speaking person to learn English.
Pronounce this word using American English: GHOTI
Click to see Spoiler:FISH. The GH is pronounced as in TouGH, the O is pronounced as in wOmen, and the TI is pronounced as in creaTIon.
The first time I saw that I was really surprised at how true the pronounciations fit into that one example and how easily it would be to confuse someone learning English for the first time.