สอบตก can't say it is V+O soobtok is a word, a compound word, you can't separate them. itz one word with 2 sillable. others similar words soobtok=soobmaipaan= tok = fail, fail the exame. 2) dai's location I can't remember all. 1. phom jam mai dai tangmot 2. phom jam tangmot mai dai. normally it will be at the end of the sentence, but*** not alway* the given example are the witness. both are correct. the rule are. 1) what you can do? verb + dai negtive verb+....mai dai the sentences I can speak Thai a little = phom poot pasa thai dai nit noi. I can speak Thai = phom poot pasa thai dai. the word a little is make the the sentence longer, and it to more detail, that a person can speak, yes but how good, so, it need more explaination. after Can (Dai) Therefore, this make you confuse, atually it still at the end of the Verb+dai can eat,= gin dai can eat not much = gin dai mai maak can speak= poot dai can speak fluent= pootdai klong. so, you say ? the rest are explaining *how good,bad, one's can do* Come-sa-mi-da (thx)

Q.1 yeah , you're right that is S+V+O but in this case .. we're talking about an ''exam(sup)" so "sup" is O(Object) then..the right answer is "phom sup thok"

Q1 : สอบ and ตก both are the verb. But some verb in thai you can use as a result of a sentance. In this case , the verb you do is "สอบ" but "ตก" is used to express the result. V+result ex: สอบ+ผ่าน ,สอบ+ตก,วิ่ง+หอบ,เดิน+เมื่อย, Q2 I can't remember all. 1. phom jam mai dai tangmot. 2. phom jam tangmot mai dai. 3. (phom) tangmot jam mai dai. the position of "ได้" usually locate at the end. But these sentances are negative sentances ,so there are a bit differrence of meaning and location. 1. jam mai dai tangmot. ==> you can remember something ,but there 're something you can't remember. 2. jam tangmot mai dai. ==> you can't remember all;nothing you can remember. 3. tangmot jam mai dai.==>meaning likes the 2nd one. it's used to emphasize the word “all”.