名詞片語whether副詞子句if副詞子句人稱代名詞that子句雙字片語動詞情緒動詞授與動詞動名詞To V使役動詞關係子句enough to V情狀副詞感官動詞反身代名詞too... to Vstand in linehave a good time關係代名詞當主詞sixteenth