$\beta$sPU

This tree handles the sentence final punctuation marks when selected by a question mark, exclamation point or period. One could also require a final punctuation mark for all clauses, but such an approach would not allow non-periods to occur internally, for instance before a semi-colon or dash as noted above in Section 23.3.3. This tree currently only adjoins to indicative or imperative (root) clauses.

(482)0(482

(483)

He left !  (483)0(483

(484)

Get lost .  (484)0(484

(485)

Get lost ? 

The feature punct bal= nil on the foot node ensures that this tree only adjoins inside of parentheses or quotes completely enclosing a sentence ((486)), but does not restrict it from adjoining to clause which ends with balanced punctuation if only the end of the clause is contained in the parentheses or quotes ((487)).

(485)0(485

(486)

(John then left .)  (486)0(486

(487)

(John then left) .  (487)0(487

(488)

Mary asked him to leave (immediately) . 

This tree is also selected by the colon to handle a colon expansion after adjunct clause -

(488)0(488

(489)

Expressed differently : if the price for becoming a faithful follower... [Brown:cd02] 

(489)0(489

(490)

Expressing it differently : if the price for becoming a faithful follower...  

(490)0(490

(491)

To express it differently : if the price for becoming a faithful follower... [Brown:cd02] 

This tree is only used after adjunct (untensed) clauses, which adjoin to the tensed clause using the adjunct clause trees (cf Section 15 ); the mode of the complete clause is that of the matrix rather than the adjunct. Indicative or imperative (i.e. root) clauses separated by a colon use the $\beta$sPUs tree (Section 23.3.3).