Question

英语诊断，请你给下面的句子诊病吧！

1. Yesterday I buyed presents. 
    改：                                             
2. Did you went skiing ? 
    改：                                             
3. Tomorrow I'll back home.  
    改：                                              
4. What did you usually do on Sunday ?  
    改：                                              
5. Yesterday I skiied.
    改：                                              

Answer 1

l. Yesterday I bought presents.
2. Did you go skiing ?  
3. Tomorrow I'll be back home.
4. What do you usually do on Sunday ? 
5. Yesterday I went skiing.