建議兩點

1，用簡單句子，如果不能handle長句和邏輯，
2，注意back anf forth的交流，說兩三句，問問反應。

再加半點，如果自己還懷疑是否把意思表達清楚了，再問，”i hope i have explained it clear enough for you guys." "i hope what i just said makes sense to you. or do you have any questions?" 反正case by case啦。