1.--Helen,do you know if Martin _______ to my party next week?
--I think he will come if he ______ free.( 。
A.will come; will beB.will come; is
C.come; isD.comes; will be

分析 --Helen,你知道下個星期Martin是否來參加我的聚會嗎?
--我想如果他有空的話他會來的.

解答 答案:B
第一個設(shè)空處,根據(jù)語境"Helen,你知道下個星期Martin是否來參加我的聚會嗎?"if引導(dǎo)賓語從句,主句是一般現(xiàn)在時,從句根據(jù)時間狀語next week判斷用一般將來時,第二個設(shè)空處,根據(jù)語境"我想如果他有空的話他會來的."if引導(dǎo)條件狀語從句,在主句是一般將來時的情況下,從句用一般現(xiàn)在時表將來,主語是he,be動詞用is,故選B.

點評 注意跟根據(jù)句意區(qū)分if引導(dǎo)的從句的類型,當(dāng)if引導(dǎo)條件狀語從句的時候,主句用一般將來時,從句則用一般現(xiàn)在時.

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