Tense in the Non-finite Clause

It is agreed in most studies of tense in the linguistic field that the "verbal group"in the non-finite clause does not concern tense.Nevertheless, in systemic functional grammar, it is proposed that the "verbal group"in the non-finite clause construes the meaning of tense.This paper, within the framework of systemic functional grammar, carries out an investigation of the linguistic phenomena such as having v-ed, v-ing, and to v in the non-finite clause.It is pointed out that these phenomena belong with the grammatical category "tense, " that they form a sub-type of the secondary tense, and that their realizations are different from other secondary tenses, and have their own features.