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-rw-r--r--linguistics/syntax.md20
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@@ -244,6 +244,26 @@ Merge is *the* fundamental underlying aspect of syntax and arguably language as
### head movement
+![will](tense-no-tense.png)
+<details markdown="block">
+<summary>LaTeX</summary>
+
+```forest
+\begin{forest}
+[$V$
+ [$D$ [I, roof]]
+ [$V_D$
+ [$V_{D,P}$ [walk]]
+ [$P$
+ [$P_D$ [to]]
+ [$D$
+ [$D_N$ [the]]
+ [$N$ [school]]]]]]]
+\end{forest}
+```
+
+</details>
+
So far, we have not dealt with tense. We have diagrammed sentences with verbs in present and past forms by entirely ignoring their *-s* and *-ed* affixes. But tense is an aspect of grammar just like anything else, and writing it off as purely semantic does no good to anyone. Indeed, the English future having its tense marker *will* as a free-standing morpheme strongly suggests that we have to treat tense as a category in its own right, and not just as an inflectional property of verbs.
A tense needs a *subject*. This is evident in our tree structure below, but is motivated by...
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