Unit 2 Sailing the oceansPart Two: Teaching ResourcesSection 1: Discourse studies of Sailing the Ocean1. Type of writing and summary of SAILING THE OCEANTypeexpositionSAILING THE OCEANUsing nature to help: Keeping alongside the coastline, using celestial bodies, using wildlife, using the weather, using the seaUsing navigational instruments to help: Finding longitude, Finding latitude2．A diagram of SAILING THE OCEANSAILING THE OCEANS（ An exposition ）Using nature to keep alongside coastline Part 1Using navigational instruments to help Part 2Using celestial bodiesUsing wildlifefinding longitudeUnit 2 Sailing the oceansPart Two: Teaching ResourcesSection 3: Words and expressions from Unit 2Sailing the oceansmercy noun (pl. -ies) 1. [U] a kind or forgiving attitude towards sb that you have the power to harm or right to punish humanity: to ask / beg / plead for mercy They showed no mercy to their hostages. God have mercy on us. The troops are on a mercy mission (= a journey to help people) in the war zone. 2. [C, usually sing.] (informal) an event or a situation to be grateful for, usually because it stops sth unpleasant: It’s a mercy she wasn’t seriously hurt. His death was a mercy (= because he was in great pain.at the mercy of sb/sth not able to stop sb/sth harming you because they have power or control over you: I’m not going to put myself at the mercy of the bank. We were at the mercy of the weather. leave sb/sth to the mercy / mercies of sb/sth to leave sb/sth in a situation that may cause them to suffer or to be treated badly: privatized companies left to the mercy of market forces (humorous) I’ll leave you to the tender mercies of these ladies! throw yourself on sb’s mercy ...
