гайхах - гайхасхийн, мэхийх - мэхэсхийн, татах - татасхийн, инээмсэглэх - инээмсэглэсхийн...
гайхах - to be surprised
гайхасхийн - to be a bit surprised
мэхийх - to bow
мэхэсхийн - to bow a little
тамхи татах - to smoke a cigarette
тамхиа татан сууна - he/she sits smoking a cigarette
тамхиа татасхийн сууна - literally: he sits smoking a cigarette (but I'd imagine he smokes inhaling little by little, or maybe inhales and then takes his to enjoy and then inhales again without hurry.. in slow motion)
инээмсэглэх - to smile
инээмсэглэсхийн - to smile, but it's not an American type of smile. Smiling slightly (?)
Hmm... hard to explain, but hope you've got the meaning.