$\begin{array}{*{20}{c}}
{Me} \\
{|\,\,\,\,} \\
{{H_2}C - N - C - Et} \\
{\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,|\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Me\,\,\,\,\,C{H_2}C{H_3}}
\end{array}$
$H_2C = C = CH - CH = O$
$sp^3$ - $sp^2$ - $sp$