பக்கம் எண் :

Derivational Changes201

(3) Addition of the auxiliary verb to the Infinitive :
   
  e.g. šeyya+=šeyyav…-šeyvi, to cause to do.
u––a+=u––av-u––uvi-ubi, to cause to eat,to feed.
padikka+=padikkav-padippi, to cause to read or learn.
   
(4) Addition of the auxiliary verb:
   
  ottu (allied to o——u), to agree, to acquiesce, to the infinitive.
   
  e.g.vƒ‰a+ottu= (vƒ‰avottu)-vƒ‰ttu, to bless, lit. ‘to cause to live’.
   
  nadakka + ottu = (nadakkavottu) -(nadakkottu)-nadattu, to conduct, lead.
   
  tu changes into cu, u or Šu by combination or corruption.
   
  e.g. pƒyttu-pƒyccu, to irrigate.
   
  n…˜ (to become long)+tu =n…——u, to stretch.
   
  kƒ– (to see)+tu=kƒ——u, to show.
   
  payil (to practise)-payiŠŠu, to train.
   
  tin (to eat)-(tiŠŠu)-t…ŠŠu, to feed.

 
     If the theme be a close monosyllable, the final consonant of the theme, very often disappears after changing into - or Š.

     e.g. pi˜ (to burst)+tu=pidu, to break.
         nil (to stand)+tu=niŠu, to weigh.    

The Passive Voice (šeyappƒ——u Vinai)

     The passive voice is formed by the addition of the auxiliary verb padu, to suffer, to the infinitive mood or some forms of verbal nouns. Of these two modes, the latter is more common.

     e.g. šeyyappadu, to be done (Inf.)
         kuttuppadu, to be stabbed (V.N.)
         kolaippadu, to be killed (V.N.)

     Infinitives of verbs expressing beneficial acts take the suffix peŠu, to get, as a reward, as a rule.

     e.g. a˜ikkappeŠu, to be given or presented.