1.The problem is how/if we can master modern science and technology in a short time.
问题描述：
1.The problem is how/if we can master modern science and technology in a short time.
答案是how,为什么不选if
2.The question is if/whether we will have out sports meet.
答案是whether,为什么不选if
3.The reason why he has been such asuccess is that/where he never gives up.
答案是where,为啥不选that
4 You are saying that everyone should beequal,and this is what/where I disagree.
答案是where,为啥不选what
答
1.解释为“是否”时,if只能用于宾语从句,其他从句必须是whether.2.这是表语从句,所以只能是whether.解释为“是否”时,if只能用于宾语从句,其他从句必须是whether.3.亲,的确选that,因为he never gives up表达的是一种...