The main purpose of this thesis is to study the aspectual complements of the aspectualizers begin and start. Aspectualizers are verbs that give aspectual readings to the sentence. I started with a summary of Freeds (1978) analysis. In this summary, semantic differences among seven aspectualizers that take to V and V-ing complements were explained. The semantic distinction between to V and V-ing was also discussed. Following the summary, a brief research on aspectual complements was conducted. Based on Freeds analysis, I first examined the difference in meaning and in frequency of...