彼も年のせいで弱くなった。
Sentence Analyzer
English Translation
        He's become frail in his old age.
    
Furigana
Romanji
        Kare mo toshi no sei de yowaku natta.
    
Words
            
                彼
            
            
                (かれ)
            
        
        
            he; him; his; boyfriend
        
    
            
                も
            
            
                (も)
            
        
        
            too; also; in addition; as well; (not) either (in a negative sentence); both A and B; A as well as B; neither A nor B (in a negative sentence); even; as much as; as many as; as far as; as long as; no less than; no fewer than; even if; even though; although; in spite of; further; more; again; another; the other
        
    
            
                年
            
            
                (とし)
            
        
        
            year; many years; age; past one's prime; old age
        
    
            
                の
            
            
                (の)
            
        
        
            indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
        
    
            
                所為
            
            
                (せい、せえ)
            
        
        
            consequence; outcome; result; blame
        
    
            
                だ
            
            
                (だ)
            
        
        
            be; is; indicates past or completed action; indicates light imperative
        
    
            
                弱い
            
            
                (よわい)
            
        
        
            weak; frail; delicate; tender; unskilled; weak (wine)
        
    
            
                成る
            
            
                (なる)
            
        
        
            to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...