・ Do not rely on the temporal adverb to understand when the action takes place as sometimes you can hear a sentence without the temporal adverb.
・ You must pay attention to the tense ending to understand when the action takes place.
・ In the case of describing past events, pay attention to the ending of the verb: -ed.
[teacher can circle and underline -ed in the examples]
Benati, A. G., & Lee, J. F. (2008). Grammar Acquisition and Processing Instruction: Secondary and Cumulative Effects (pp. 99-101). Bristol; Buffalo: Multilingual Matters.