英語(yǔ)六級(jí)攻克閱讀關(guān)鍵句245. If a mixed traffic system was in place, a

245. If a mixed traffic system was in place, automated driving could begin whenever the driver was on suitably equipped roads.

譯文　如果目前已有一個(gè)混合的交通系統(tǒng)，那么在配備了相應(yīng)設(shè)施的道路上行駛時(shí)，司機(jī)就可以啟用自動(dòng)駕駛。

點(diǎn)睛　本句是個(gè)主從復(fù)合句，主句的主干是...automated driving could begin...。其中，whenever引導(dǎo)時(shí)間狀語(yǔ)從句；if引導(dǎo)條件狀語(yǔ)從句。

mixed意為“混合的”。如：

He had some mixed pickles and rice for supper. 他晚飯吃了一些什錦泡菜配米飯。

automated意為“自動(dòng)化的”。如：

This part of the assembly process is now fully automated. 現(xiàn)在，裝配過程的這一部分是全自動(dòng)的。

考點(diǎn)歸納　in place與in place of形式相近，含義卻大不相同：

in place意為“在適當(dāng)?shù)奈恢?rdquo;，與它含義相反的短語(yǔ)為out of place。如：

Before you leave the office, everything should be put in place. 在離開辦公室之前，應(yīng)把所有物品擺放好。

in place of意為“替代”，相當(dāng)于take the place of或者replace。如：

Robson came on in place of Wilkins ten minutes before the end of the game. 比賽結(jié)束前10分鐘，羅布森上場(chǎng)替換威爾金斯。

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