Question

3．如果你在一個陌生的城市迷路了，最好向警察求助．
You'd betterask a policeman for help when you get lost in an unfamiliar city．

Answer 1

分析 ask a policeman for help．

解答 答案：ask a policeman for help．根據(jù)中英文對照這里需要譯出向警察求助，向…求助用ask sb for help，這里前面有You'd better，表示你最好…，后加動詞原形，故答案是ask a policeman for help．

點評 常見后接動詞原形的詞或短語：why not/had better/please/would you please/let/make/情態(tài)動詞，等等．
注意否定形式：had better/would you please/let直接加not+動原；