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1)It is the third time that you____late for school this week

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1)It is the third time that you____late for school this week(be)
2)关于look的词组及其意义,譬如look up、look into等
3)现在完成时,现在完成进行时,过去完成时的区别
4)I_____a bad cold for a week.(have had\have been having选择)
1 have been
It is the [n] time that + 现在完成时have done
It was .+ 过去完成时had done
2
look after
To take care of:
照顾:
looked after his younger brother.
照顾他的小弟弟
look for
To search for; seek:
寻找;搜索:
looking for my gloves.
找我的手套
To expect:
希望:
Look for a change of weather in March.
希望三月天气会变
look on 或
look upon
To regard in a certain way:
认为,看待:用某种方式看待:
looked on them as incompetents.
认为他们不胜任
look out
To be watchful or careful; take care:
小心,当心;注意:
If you don't look out, you may fall on the ice. We looked out for each other on the trip.
如果不小心的话,你会在冰上摔倒的.我们在旅途中互相照看
look to
To expect:
期望:
He looked to hear from her.
他期望收到她的信
To seem about to; promise to:
看似将要;许诺做:
“an ‘Action Program,’ which . . . looked to reduce tariffs on over 1,800 items”(Alan D. Romberg)
“一个…许诺削减1500种物品关税的‘行动计划’”(艾伦D.龙伯格)
look up
To search for and find, as in a reference book.
查找:在参考书中寻找并找到
To visit:
拜访:
look up an old friend.
拜访一个老朋友
To become better; improve:
变得更好;改善:
Things are at last looking up.
情况终于有所改观
3 主要是动作时间参考点不一 建议看语法书,皆有详细解释
4 have had
have been having绝对没有这种说法,前一种说法就是这个意思,语义冗余,就是同语反复阿