Halliday & Matthiessen (2014: 414, 415):
Where there are agnate pairs of verb ~ verb + adverb, the ‘phrasal’ variant involves a specification of phase, similar to the phasal specifications in Chinese by post-verbs although the English range of options is much more restricted since it involves adverbs rather than verbs. There are three types of phase, temporal, spatial (directional) and resultative: see Table 6-17. These occur with various semantic fields; among these, motion is an important one …
