1. He laughs and thinks of tomorrow's math test.
2. He laughs and then thinks of tomorrow's math test.
3. He laughs and thinks of tomorrow's math test at the same time.
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Does #1 mean #2 or #3?
Since the verbs indicate simultaneous actions, #1 and #3 are basically the same.
To determine whether #1 means #2 or #3, we need to analyze the different interpretations of the phrase "laughs and thinks of tomorrow's math test."
In #2, the phrase "laughs and then thinks of tomorrow's math test" suggests that the person first laughs, and then their thoughts turn to tomorrow's math test. This sequence implies a separation in time between laughing and thinking about the math test.
On the other hand, in #3, the phrase "laughs and thinks of tomorrow's math test at the same time" implies that the person is simultaneously laughing and thinking about the math test. This suggests that the person finds the idea of the math test amusing or is connecting it to something funny while thinking about it.
Based on these interpretations, #1 can be assumed to mean #2, as it does not explicitly mention simultaneous laughing and thinking. However, it is worth noting that context and further information could alter the interpretation.