。。
She can play tennis, and so can I.
Literal
She [topic-は] tennis [subject-が] can-do. And I [also-も] can-do.
Two short polite-form clauses joined with そして ('and then / and also'), the standard sentence-initial connector for adding a related idea. テニスができる uses the noun ＋ ができる pattern — the irregular potential of する, here functioning as a stand-in for activity-level competence ('can [do] tennis'). The も on 私 is the additive 'too' marker, joining the speaker to the established predicate. A textbook-style sentence: clean, parallel, slightly stiff in its even structure.