From Scottish Gaelic Grammar Wiki
Non-finite clauses as a complement of iarr 'ask'
Dh'iarr Iain air Anna leabhar a cheannach. ask.pst John on Anna book tran buy.vn 'John asked Anna to buy a book.'
Non-finite clause as a complement of gun
Chaidh am balach dhan a' sgoil gun Iain a fhaicinn. go.pst the.sg.m boy.sg.m to.the the.sg.f school.sg.f Neg.Decl.Comp John poss.3sg.m see.vn *'The boy went to the school without Iain seeing him.'
Non-finite clause in causative constructions
Thug Iain air Anna an leabhar a thoirt do Mhàiri. give.pst John on/perf Anna the.sg.m book.sg.m tran give.vn to Mary 'John made Anna give the book to Mary.'
Non-finite clause as a complement of modal verbs
Feumaidh Iain an leabhar a cheannach. need.fut John the.sg.m book.sg.m tran buy.vn 'John must [has to] buy the book.'
Non-finite clause as a subject
Is còir do Iain an leabhar a cheannach. cop.pres right to John.dat the.sg.m book.sg.m tran buy.vn 'John should buy the book.'