デビッドはとても活動的だ。

デビッドはとても活動的だ。

David is very active.

デビッドはとても活動的(かつどうてき)だ。

Debiddo wa totemo katsudōteki da.

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

迚も (とても、とっても)

very; awfully; exceedingly; (not) at all; by no means; simply (cannot)

活動的 (かつどうてき)

active; dynamic; energetic

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: カツ、い.きる、い.かす、い.ける

Meanings: lively, resuscitation, being helped, living

Readings: ドウ、うご.く、うご.かす

Meanings: move, motion, change, confusion, shift, shake

Readings: テキ、まと

Meanings: bull's eye, mark, target, object, adjective ending