摘要：
adifferingviewis…adifferentviewis…instead…incontrast…but…competingwiththis…ontheotherhand…... a differing view is … a different view is … instead …
in contrast …
but … competing with this …
on the other hand … moreover …
yet … nevertheless …
correspondingly… similarly…
conversely… on the other hand…
likewise… while…
whereas… notwithstanding…
conclusion（表明做结论的）
to sum up …
in summary …
to summarize …
in conclusion …
to conclude …
finally …
