A Grammar of Turkish Sign Language (TİD)

One common non-manual marker used in reason clauses is head thrust. Other non-manual markers such as furrowed eyebrows and raised eyebrows sometimes accompany the reason clauses.

                                                      fe

          [very tıred for_thıs_reason] ıx₁ home return

          ‘I went home because I was tired.’

As shown in the example above, furrowed eyebrows spreads from the beginning of the reason clause and its spreading domain contains the subordinating morpheme for_this_reason. Thus, both for_thıs_reason and the furrowed eyebrows mark the end of the reason clause.

                                                            h-th

                                                         fe    

          [washıng machıne very old for] break

          ‘The washing machine was broken since it was very old.’

The common non-manual marker head thrust at the end of the subordinate clause accompanies the manual sign for. In the example above, furrowed eyebrows is also observed partially on the subordinate clause.