[考題] 三個文法選擇題目 請幫忙解惑 謝謝>"<

[praylove49 (祈禱愛)]

考題：一般

題目：

一、All you have to do today is _____ at home doing exercise.

   (A) stay  (B) staying  (C) stayed (D) have stayed

   答案寫(A)，想請問為什麼？如果要翻書的話，請問這是屬於哪章節的呢？

二、The heavy rain kept us _____ on a picnic on Sunday.

   (A) from to go (B) with going (C) from going (D) to putting up

   答案寫(C)，想請問為什麼？這題目的中文意思其實我也看不太懂..
   kept在這邊是阻礙的意思嗎？

三、He will not come unless _____ .

   (A) inviting (B) invited (C) having invited (D) to have invited

   答案是(B)，想請問為什麼？這題目是屬於假設語氣那個章節的嗎？
   我找不到有關unless的用法>"<


再麻煩會的人幫忙解惑了，感激！


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推 sazuki:keep...from 使..不能夠;免於。除非"被"邀請，使用pp表被動
推 cooxander:第一題應該是祈使句(不確定)
→ cooxander:(All you have to do today is) stay at home...
→ cooxander:第二題我這樣背："keep someone from doing something"
→ cooxander:"某事使某人不能從事某件事"
→ cooxander:第三題應該是被動式
推 jklkj:第一題答案在#1DQZO_WU
推 hownever:All you have to do today is (to) stay at home.
→ hownever:He will not come unless (he was)invited.
推 pptuser:第一題我不確定會選Ving動名詞，很久沒用了。
→ praylove49:謝謝解答~~︿︿