1. Captain Cook is preparing for his first great expedition to the Pacific. 库克船长正在为他的太平洋远征做准备。 prepare for 为……做(事前的)准备； prepare 准备着…..；正在干……； 试比较：They are preparing for Li Mei’s birthday party. 他们正在为李梅的生日晚会做准备。 Mother is preparing dinner in the kitchen. 妈妈正在厨房里做饭。 They are preparing for dinner. 他们正在为那顿饭做准备(买菜，洗菜)。be prepared for = prepare for 为……做(事前的)准备。e.g. The students have been well prepared for the coming examinations. 学生们已经为即将到来的考试做好了充分的准备。prepare sb. for sth. 使某人对某事有所准备；prepare to do sth. 为做某事而做准备；
2. I insist on taking proper food for this expedition. 我坚决主张携带适合于这次远征的食品。insist v. 坚持；强调；后接名词, 代词或动名词时要先接介词on, 后接宾语从句时有两种情况：1). 如果从句的动作尚未发生，用虚拟语气 “(should) + 动词原形”, 表示“坚决/坚持要求某人做某事”。2). 如果从句的动作已经发生，或者情况确实存在，用陈述语气, 表示 “坚持认为；坚持说”。 e.g. They insisted on helping us with our work. 他们坚持要帮助我们干活。Our English teacher insists on the importance of correct pronunciation. 我们的英语老师强调正确发音的重要性。They insisted that he should be present at the meeting. 他们坚决要求他出席会议。 She insisted that she needed no help. 她坚持说她不需要任何帮助。 The doctor insisted that she should stay at home for at least three months. 医生坚持要求她至少在家休息三个月。
3. So I have decided to take live animals. 所以我决定只带活的动物。 live adj. 活的；实况的；只做定语；alive活着的；在世的；只做表语或后置定语；living adj. 活的；有生命的；可以做表语或定语，与the 连用指一类人。 请比较：Is this bird alive / living or dead? 这只鸟儿是活的还是死的？ I only want live / living fish. 我只买活鱼。 His grandfather is still alive / living. 他的爷爷仍然活着。The living must fulfill the task that the dead haven’t ended. 活着的人必须完成死者的未竞事业。live broadcast 现场直播。
4. at sea 在海上；在航海；all at sea 茫然；不知所措；at the sea 在海边；by the sea 在海边上；e.g. The ship was hit by a hurricane at sea. 那艘船在海上遭遇飓风。 I can’t understand this problem. I’m all at sea. 我不懂这条题，我完全摸不着头脑。He lives by the sea. 他家住在海边上。
5. I suggest taking a lot of vinegar. 我建议带大量的醋。suggest vt. 1). 建议；后接名词，动名词，从句用 “虚拟语气 (should) + 动词原形”. e.g. Mr. Chen suggested a meeting to discuss these problems. 陈老师建议开个会来讨论这个问题。She suggested that the plan should not be put into practice at once. 她建议这个计划不要马上实施。2). 暗示；(从句用陈述语气) e.g. His silence suggested that he didn’t agree to our decision. 他的沉默表明他不同意我们的决定。
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