Underline the correct form of the verb. e.g. I watch/'m watching a film tonight.

Solution:

• The correct form of the verb depends on whether the action is habitual or happening at the moment.
• For habitual actions, use the Present Simple. For actions happening now, use the Present Continuous.

Example breakdown:

• 'I watch a film tonight' implies a planned future event, so 'am watching' would be more appropriate if referring to the present continuous for future arrangements. However, 'I watch' is the correct simple present for habitual actions. The example 'I watch/m watching a film tonight' suggests a choice between simple present and present continuous. For a specific future event like 'tonight', 'I am watching' is generally preferred for planned actions. If it were a general statement about habit, 'I watch' would be correct. The ambiguity in the example is noted.

Answer: The choice between Present Simple and Present Continuous is determined by context: habitual actions vs. actions in progress.