23. Donald Trump ________ a millionaire by the time he was thirty years old.
(A) has become
(B) was become
(C) will become
(D) had become

答案：登入後查看
統計： A(136), B(50), C(19), D(426), E(0) #2166389

詳解 (共 4 筆)

#3825040

川普30歲時已經成為了百萬富翁

Donald Trump had becom a millionaire by the time he was thirty

had+ 過去分詞,  過去完成式

過去式：became 過去分詞：become 現在分詞：becoming


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#4369832

 [ By the time ]是連接詞，假如它引導的子句是描述未來，主要子句要用未來完成式。例句如下：

By the time they are released, they will have learned some skills to begin their new lives


[ By the time ]引導的子句也可以描述過去，主要子句要用過去完成式。例句如下：

By the time I finished my homework, my young brother had gone to bed.

除[ By the time ]的句型外，還有另一類似句型：

[ By + 未來時間, 主詞 + 未來完成式 … ]

例句如下：

a) By the year 2050, the world will have lacked for enough food.

By the time 現在式，未來完成式
By the tme 過去式，過去完成式
By the 未來時間，未來完成式
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#3759481
在過去時間點中，先發生用過去完成式，後發...
(共 29 字，隱藏中）
前往觀看
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#4258715

millionaire 百萬富翁/大富翁

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