Linda,make sure the tables____ before the guests arrive.A.be set B.set C.are set D.are setting如果有E答案 will be set 2010年吉林市二模题：-How about buying sam a mobile phone?after all ,he isn't a boy any more.-I think it necessary,for we sometimes want to make sure if he _home for dinner.A.will come B.comes C.has come D.would come这两个题类似吗?请指教,
问题描述：
Linda,make sure the tables____ before the guests arrive.A.be set B.set C.are set D.are setting
如果有E答案 will be set
2010年吉林市二模题：
-How about buying sam a mobile phone?after all ,he isn't a boy any more.
-I think it necessary,for we sometimes want to make sure if he _home for dinner.
A.will come B.comes C.has come D.would come
这两个题类似吗?请指教,
答
第一题把句子直译过来就不难得出答案C了；第二题选A是因为这个句子属if从句，从句要用一般将来时！
答
before引导的从句一般时，主句用将来时
if 引导从句将来时，主句一般时
答
不可以.
make sure the tables are set before the guests arrive
主将从现,这里主句是祈使句,特殊了一些.
不一样,第二题并不是事实,只是一种假想,并不是“主将从现”这种情况.
按意思理解着做就行.
A.will come
答
1。不可以选will be set.这个是表示命令，表示一个结果的一定要用are set.
2。这个和第一个不一样。这个句子表示判断的意思if表示是否，可以换成whether or not he will come home for dinner.