Syntactic Theory
Step 3
Segmentation II:
Identify Constituents
In our example sentence:
- my history teacher
- substitution: Pat will write to him tomorrow
- to my history teacher
- movement: To my history teacher Pat will write tomorrow.
- write to my history teacher
- substitution with do so: ''John will write to my history teacher next week and Pat will do so tomorrow.
- write to my history teacher tomorrow
- substitution with do so: ''John will write to my history teacher tomorrow and Pat will do so as well.
- will write to my history teacher tomorrow
- substitution with do so: ''John will write to my history teacher tomorrow and Pat does so as well.
In general:
- Check out the page about Constituents and phrasal syntactic categories.
Result of Step 3:

Move on to Step 4!
... or go back to the overview over the six steps.