see through 看穿 ; 看透 be through with 完成 all through 一直;始终
难
句
解
析
1.Hiking is easy to do and doesn't have to be very expensive .
Be +adj. +to 不定式(主动形式),形容词常为easy difficult ,hard ,fit ,pleasant ,等。例如;
English is easy to learn .
2.As with hiking ,you should always think about your safety .
as with =as is the case with 正如......一样
as with =as to =as for 至于
3.Flora heard somebody shouting .she looked around and see jeff running .
感官动词see,hear,watch ,feel ,notice ,observe 及使易动词let, make, have 后接复合宾语时,其中的宾语补足语通常有三种形式n;
(1)用不带to 的不定式(let 和have 一般不用于被动语态,其他动词用于被动语态时,不定式前必须带to )
(2)用现在分词做宾补,表示宾语正在进行的动作。
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