观察并翻译句子，试着归纳其画线部分所包含的句型结构。

They are the first records we have of Europeans sailing to the Americas．

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观察并翻译句子，试着归纳其画线部分所包含的句型结构。

…but he was blown off course and found himself in an unknown land, from where he eventually reached Greenland．

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观察并翻译句子，试着归纳其画线部分所包含的句型结构。

The Vikings were the first Europeans to reach America．

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把下列对话用线连起来

用所给动词的适当形式填空

She should ________(receive)the package．I sent it five days ago．

用所给动词的适当形式填空

It should ________(be)somebody else．Jane never stays in the lab so late．

用所给动词的适当形式填空

Sorry to be so late．You will ________(wait)for some time．

用所给动词的适当形式填空

That will ________(be)the postman．He usually comes at this hour．

用所给动词的适当形式填空

Haven’t you got the tickets? You oughtn’t to ________(have)any difficulties in getting them．

用所给动词的适当形式填空

She ought to ________(have)his address．She was his girl friend at university．