The structure of PPs: Tree diagrams

Note:
In the tree diagrams below we represent constituents of the type [determiner + noun] (e.g. the door) as NPs. In a more recent analysis, determiners are considered to be the head (D) of a determiner phrase (DP), and the noun functions as its NP-complement. Thus, if you have treated constituents of the type [determiner + noun] as DPs when doing this exercise, this is a correct alternative analysis.
For further information on DPs click here.

a) PP[across the bridge]

b) PP[from before the war]

c) PP[slightly at odds with his friends]

d) PP[completely in the wrong]

e) PP[out of touch in some ways]

Note: In the tree diagrams above constituents of the type [determiner + noun] are represented as NPs. In a more recent analysis, determiners are considered to be the head (D) of a determiner phrase (DP), and the noun functions as its NP-complement.
For further information on DPs click here.