Final answer:
The three phrases that contribute to the tone and mood are 'so long as the fine weather lasts,' 'I am so much in the mood for painting,' and 'you would approve.'
Step-by-step explanation:
The three phrases that contribute to the tone and mood are:
- so long as the fine weather lasts: This phrase suggests a positive and optimistic tone, as the good weather enhances the author's ability to paint.
- I am so much in the mood for painting: This phrase indicates a strong desire and passion for painting, creating an enthusiastic tone.
- you would approve: This phrase conveys a hopeful and eager tone, as the author seeks validation and support from the reader.
Learn more about Tone and Mood in Vincent van Gogh's letter