私は彼女が忙しかったことを知っている。
Sentence Analyzer
English Translation
        I know that she has been busy.
    
Furigana
Romanji
        Watashi wa kanojo ga isogashikatta koto o shitteiru.
    
Words
            
                私
            
            
                (わたし、わたくし)
            
        
        
            I; me; private affairs; personal matter; secrecy; selfishness
        
    
            
                は
            
            
                (は)
            
        
        
            topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
        
    
            
                彼女
            
            
                (かのじょ)
            
        
        
            she; her; her; girlfriend; sweetheart
        
    
            
                が
            
            
                (が)
            
        
        
            indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
        
    
            
                忙しい
            
            
                (いそがしい、せわしい)
            
        
        
            busy; hectic; occupied; engaged
        
    
            
                事
            
            
                (こと、こん)
            
        
        
            thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as
        
    
            
                を
            
            
                (を)
            
        
        
            indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
        
    
            
                知る
            
            
                (しる)
            
        
        
            to be aware of; to know; to be conscious of; to cognize; to cognise; to notice; to feel; to understand; to comprehend; to grasp; to remember; to be acquainted with (a procedure); to experience; to go through; to learn; to be acquainted with (a person); to get to know; to concern