When using a map, pay attention to the following things. 为什么用using？

When using a map, pay attention to the following things. 为什么用using？

1、When using a map, pay attention to the following things.
=When you are using/you use a map,pay attention to the following things.
=When 【you are using/you use】 a map,【you should】pay attention to the following things.
【you】和【use】是主动关系，因此用using.
知识链接：
在时间、条件、地点、方式、比较、让步等状语从句中，如果从句主语和主句主语相同，或主语是it时，从句的主语和谓语动词的一部分（多是be动词）经常省略。
这里，结合祈使句，设置状语从句的省略结构，两种省略同时并存，理解难度比较大。
在省略结构中，如果句子主语和从句动作是主动关系，就用v-ing形式；如果是被动关系，就用过去分词。再如：
While crossing the street，the boy was hit by a car.
If finished, the report should be handed in before this afternoon.
2、You must by No.6 bus
典型的汉式英语表达——by是介词，不能直接作谓语。可以改为：
You must 【go by 】No.6 bus.
or
You must 【go/ get there by】 No.6 bus.
祝你开心如意！

When using a map, pay attention to the following things.
本试题的When using a map中 在when 和using 之间省略了you are， 下半句中pay attention to the following things省略了主语you

如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！

点此我要举报以上问答信息