1 Thai is very regular and simple.
2 There are no verb tenses and nor does the verb change
3 There is a different alphabet
4 The ordering of most sentences is different
5 The use of classifiers in Thai not English eg lemon is green colour
6 The use of words that mean nothing in transliteration on a constant basis khrap na khrap
7 The use of the verb to answer yes eg do you have? have
8 The same letters sounding different in 2 different words, when Thai vowels have only 1 sound eg bear / hear or there / here
9 No tones but inflections and stress
10 No plurals