Question

【题目】Please ask your English teacher for help if you _________ the words.

A. don't knowB. won't knowC. didn't knowD. aren't knowing

Answer 1

【答案】A

【解析】

句意：如果你不认识这些单词，请向你的英语老师求助。don’t know不认识，一般现在时；won’t know一般将来时；didn’t know一般过去时；aren’t knowing现在进行时。句中if引导的是条件状语从句，主句是祈使句，从句中应用一般现在时，故应选A。