come to的用法：
一、come to后接名詞、數詞、代詞或不接任何詞：
1）談到, 涉及到: When it comes to physics, he is a complete stranger.談到物理,他完全是個外行.The school has very good teachers, but when it comes to buildings, the school is poor.這個學校有好老師, 但是從校舍來看很貧窮.
2）表示“合計,總共”,同amount to.—How much does the bill come to?帳單上共多少錢?
3)表示“開始被…所認識,被…所記起.”突然想起(無被動式)--In a flash,the truth came to him. 突然間,他明白了真相.—I was on my way when it suddenly came to me that I had not hung out my washing.我已經上了路,突然想到洗的東西沒有晾出去.—Suddenly,the words of the song came to me.突然間 我想起這首歌的歌詞來.
4）發生(在某人身上),降臨于(某人):Happiness will come to you as long as you are after it. 只要你追尋它,幸福會降臨于你.
5）恢復知覺,蘇醒過來: After three hours in the hospital bed, he began to come to.躺在醫院床上三個小時后,他開始蘇醒過來.