Native speakers process sentences and integrate morphosyntax incrementally,
but it is unclear whether L2 speakers can do the same. L1 English speakers
and L2 English (L1 Mandarin) speakers heard passive and progressive active
sentences in an eye-tracking study. L2 speakers looked at the correct image
during the second noun phrase or the agentive by-phrase, while L1 speakers
looked at the correct image sooner (after hearing the entire verb).
However, L2 speakers were not slower to process passive sentences than
active sentences, unlike the L1 speakers. This suggests that L2 speakers
did not integrate morphosyntax incrementally. Potential explanations are
discussed.